Wednesday, 8 April 2015

Best Heirloom Tomatoes 2014-2015 part 2

I wrote part 1 of this post earlier, but it started to get too long so I have continued it here.

Like I said in my first post all seeds were sown the same day on 9 August 2014 without heat, all seedlings were transplanted into the vegetable garden about 7 weeks later when the majority were 15 to 20 cm tall (they were all planted out on the same day, some were larger than others).  I have included the date the first fruit ripened after the variety name.  They are listed in order that their first fruit ripened.
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I had one bed of tomatoes that did not go too well, the drippers I put in got clogged a little and I did not notice for a while.  There are also a lot of tree roots in this bed which may have robbed the tomatoes of nutrients and water.  I lost a few plants in this bed and came close to losing all of the others.  All of the plants in this bed fruited later than the rest, I think it was the bed itself that caused this.

Purple Cherokee
Purple Cherokee (21/02/2015) large purple/pink/red tomatoes, some round, some a little odd shaped.  Fruit took a long time to ripen.  Very distinctive taste.  People often say this tomato has a smoky taste or taste of good red wine, I had never understood that until tasting them myself, wow.  A little salt adds more depth to their taste - Unbelievable!  This plant produces a medium to large yield of large fruit, it has regular leaf and is indeterminate.

Not quite round tomatoes
Dwarf multiflora (21/02/2015) the plant flowered early but the fruit took a very long time to ripen considering their size.  Masses of flowers and fruit formed at each truss.  This is a great tomato for small spaces as it is small but still productive.  Dark yellow/light orange fruit that is not quite round often has a small amount of green stripes.  It had a nice strong tomato taste with a zing.  I have plants to cross this with a micro tomato and create something interesting.  This multiflora plant produces a large yield over a short season, it is dwarf, has regular leaf and is indeterminate.

Black Cherry
Black Cherry (25/02/2015) for a cherry tomato this plant took a long time to ripen, all the tomatoes in that bed took a lot longer, I think it may have been the bed itself rather than the plants.  Black Cherry is said to be one of the best tasting tomatoes ever bred.  This was a great tasting cherry tomato, flesh was reasonably sweet while the seeds were reasonably sour.  I preferred Snow White over Black Cherry as did everyone who tried them both this year.  This plant produced a medium yield over the season, it has regular leaf and is indeterminate.


This fruit is boxy but good
Red Paste Type (03/03/2015) red boxy tomatoes, very nice looking, kind of like delicious red Christmas ornaments.  High yield but slow to ripen, great tasting tomato.  Some fruit can be slightly hollow, others on the same plant were solid.  This plant produces a large yield late in the season, it has regular leaf and is indeterminate.

I didn't take a picture of the JBT cross?
Japanese Black Trifelle cross (10/03/2015) Brown tomato, amazing taste, Japanese Black Trifelle crossed with a mystery tomato.  This fruit tasted great, almost as good as Malakhitovaya Shkatulka (which is possibly the best tasting tomato in the world).  This variety is still segregating, I plan to develop something decent from it in the future.  For some reason I did not take any pictures of the fruit but it doesn't matter too much as it may change as the variety becomes more stable.  This plant has regular leaf at the moment and is indeterminate.

Did not save seeds from this one
Grub's Mystery Green cross? (12/03/2015) green round fruit, possible cross as regular leaf (this variety is known to throw regular leaf occasionally so it may not be a cross), great tasting tomato almost as good as Malakhitovaya Shkatulka.  Fruit ripened green but were sometimes completely red even on the same plant or branch.  This plant has regular leaf and is indeterminate.  I wont grow this again as I did not save seed, I prefer potato leaf which is meant to be part of this variety.

OSU Blue starting to get colour

OSU Blue (12/03/2015) amazing deep colour like no other tomato before it.  Black/violet/blue on top of red.  The colours intensify when the temperatures are low but the UV light remains high.  Parts of the fruit that do not receive light stay red so words/logos etc can be on the fruit by placing a sticker of that shape on the unripe tomato and removing the sticker when the fruit is ripe.  You can even spell out your child's name using one letter per tomato.  In cooler temperatures even the leaves and stems take on a slight purple tinge.  This plant has regular leaf and is indeterminate.

White Wonder
White Wonder - the whitest tomato I have ever grown
White Wonder (13/03/2015) Inconsistent fruit size, some larger some smaller.  Most whites are pale yellow, this was very white, by far the whitest of the whites that I have grown.  Amazing looking round fruit with a mild taste, far nicer than store bought but the taste was nothing too amazing.  This plant has regular leaf and is indeterminate.

Grub's Mystery Green
Grub's Mystery Green (03/04/2015) a delicious, nice sized round tomato that is green when ripe, less of a red blush than Malakhitovaya Shkatulka.  This is another great tasting tomato!  It produced a small yield late in the season, I assume this is due to the bed in which it was growing rather than the variety.  I prefer MS to this but they are both great tasting varieties.  This plant has potato leaf and is indeterminate.

A few others I have may never ripen, they were in the dodgy bed and loaded with fruit.  The ducks got in a few times and stole most of it but there was still enough left that I thought could ripen.  Last night something got in and ate all but one tomato, that tomato is in an exclusion bag.  The plants look almost dead, I think it may be time to call this year's tomatoes finished.  That one tomato may still ripen, and I do have some very late planted micro tomatoes which are in pots currently flowering that may fruit, but I think I can write other posts for them if need be.


Where to get heirloom tomato seeds
Some of these varieties are rather common, others are pretty rare.  There are a few good heirloom seed companies around as well as some dodgy ones.  Ironically one of the largest and well known heirloom seed companies is also probably the worst.  I may sell some of these seeds, if you are interested please look on my For Sale page.  I am working hard to develop a few new varieties that are not listed here, it will take me a few years to stabilise them properly.  If I ever develop anything great I will also try to list it on my for sale page or I may even start a proper website or get a store or something by then.

Best Heirloom Tomatoes 2014 - 2015 part 1

This year I grew a few different types of heirloom tomato, I figured I would write a comparison between how they went in my garden.  There are a few that are not listed here as I kind of want to keep them under my hat for now, or they are not yet stable so their details are not going to be relevant just yet.  Most varieties listed are regular leaf and indeterminate, if anything was potato leaf or determinate I have written it in italics.  If any variety is what I consider to be a dwarf variety I have also included that in italics.
Heirloom tomatoes
Many seed sellers tell you the days to maturity, unfortunately what they mean is days from when the seedling is 30cm tall and transplanted into the ground to maturity.  They never tell you how long from sowing the seed until the first fruit.  I know of one variety that is often stated as 55 days to maturity from transplant but 120 days from seed.  Obviously a host of variables can change the days to maturity, but I would find it more useful to tell me from seed to the first ripe fruit which is why I have used those dates here.

Quite often seed catalogues write glowing reviews even for substandard tomatoes with poor taste and low yields, I have tried not to do that and if I don't like it or found something that could be better I have said so.  Some I wont save seeds from or grow again, others have merit so will get another chance or be used as breeding material to develop something better.
Tomato flowers from a productive variety

All seeds were sown the same day on 9 August 2014 without heat, all seedlings were transplanted into the vegetable garden about 7 weeks later when the majority were 15 to 20 cm tall (they were all planted out on the same day, some were larger than others).  I have included the date the first fruit ripened after the variety name.  They are listed in order that their first fruit ripened, sometimes there was a large delay from first fruit to any subsequent fruit, this has been noted.

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Reisetomate tomatoes
Reisetomate (25/12/2014) was overwintered and was the first tomato to ripen any fruit, this is not characteristic of the variety as the seed grown plant took about 2 months longer.  This was the only tomato I overwintered this year.  The deep red fruit are odd lobed shapes that can be pulled apart like the segments of an orange.  The taste is sour and intense and the tomatoes look interesting.  This plant produces a large yield, it has regular leaf and is semi determinate, it is my favourite red tomato.

Snow White tomatoes - usually more pale than the picture
Snow White (07/01/2015) was the first of the seedling plants to grow ripe fruit in my garden, it took about 5 months from sowing the seed to harvesting the first fruit.  Perhaps I will overwinter this and see how early I can get tomatoes next Summer.  The fruit is round and white if it does not get sun and slightly yellow if the sun hits the fruit.  The flesh tastes very sweet and fruity, the seeds/gel taste a little sour which compliments the sweet nicely, a real winner.  This is a great cherry tomato which was loved by everyone who tasted it.  This plant produces a very large yield over a long season, it has regular leaf and is indeterminate.

Juane Flamee, some small
Juane Flamee, some large
Juane Flamee (spelled various ways) (12/01/2015) was the second seed grown plant to produce ripe fruit.  It is said to be one of the best tasting tomatoes, I think it is certainly very good but not overly great, I think people love it because of the high yields it gives.  The fruit is round and orange, as can be seen by the pictures above the fruit size is rather inconsistent.  This plant produces a very large yield over a long season, it has regular leaf and is indeterminate.

Yellow pear, mostly brighter yellow than the picture
Yellow Pear (12/01/2015)  is a variety that I have been keeping for years, it grows nice looking yellow pear shaped tomatoes.  The plant grows huge and is a real survivor that has proven itself over many years of harsh conditions.  The sweet tomatoes are great for eating fresh or in salads and look beautiful.  This plant produces a massive yield (both in terms of number of tomatoes as well as overall weight of tomatoes) over a very long season, it has regular leaf and is indeterminate.

Black Russian, often cracks like this
Black Russian (29/01/2015) is one of the most over rated heirloom tomatoes ever grown, certainly not the best tasting black tomatoes I have ever eaten.  It still tastes much better than anything from a shop.  The fruit is prone to splitting and cracking but that does not matter much.  The plant produced a lot of flowers that simply aborted and produced no fruit even in good conditions with masses of pollinators.  It is said to be an early variety but took about 3 weeks longer than Snow White, Juane Flammee and Yellow Pear.  January 29 was the date of the first ripe tomato, it did not give a second tomato until 14 February which puts it behind Speckled Roman!  The colour of the fruit is amazing and they are a good size, unfortunately the taste, yield and time it takes to mature let it down.  This plant produced a small yield over a short and broken season, it has regular leaf and is indeterminate.


Tigrella, the colours are far more vivid than the picture
Tigrella (04/02/2015) is a great little tomato, it looked beautiful and tastes great.  The round stripey fruit had a dark seed cavity and were pretty consistent in size, most were a little larger than the picture.  The taste was a little stronger and more sour than Juane Flamee and it produced less tomatoes too.  The plant produced a reasonably large yield over a long season, it has regular leaf and is indeterminate.

Roprecco Paste, most were a bit larger than this
Roprecco Paste, a good tomato
Ropreco Paste (06/02/2015) is a good tomato, it looks much like a Roma tomato and tastes like a great Roma tomato.  The tomatoes are a good size and nice shape, most were slightly larger than pictured.  I liked to eat these fresh or in sandwiches, they can make a decent sauce, soup or paste due to their rich tomato taste.  This plant produced a reasonable yield over a short season, it has regular leaf and is determinate.

Malakhitovaya Shkatulka, delicious!
 Malakhitovaya Shkatulka (06/02/2015) is a great tomato which I can't believe is not grown more commonly in Australia.  The size and shape of the fruit lend it to slicing for sandwiches etc, the taste is absolutely amazing, probably the best tasting tomato ever grown.  Everyone who tasted this loved it.  It is difficult to tell when they are ripe from a distance, but simple enough when you are close enough to touch them.  I wish that it was higher yielding as they taste so great.  Birds leave the ripe fruit alone as it is green.  The name of this variety is kind of fun to say but difficult to spell.  This plant produced a medium to low yield over a long season, it has regular leaf and is indeterminate.

Julia Child, large pink soft fruit
Julia Child (08/02/2015) grows the softest tomatoes I have ever seen, the flesh is like soft butter.  It has very few seeds and a nice taste.  The pinky red round tomatoes are large and rather pretty.  They are perhaps too large as they hang on the plant for a long time ripening and may be attacked by insect pests etc during that time.  The plants itself looked lush and ornamental, it could grow by the front door and would not look out of place.  This plant produced a high yield over a long season, it has potato leaf and is indeterminate.

Unnamed red cherry
Unnamed cherry tomato (08/02/2015), these were given to me at a fete, I didn't want to grow an unknown variety but accepted them as I did not want to be rude.  I disliked them last year but figured I give them another go this year as a comparison.  The plant looks nice as do the trusses of 6 small perfect round red cherry tomatoes.  This plant is why I try to never grow unknown varieties of tomato unless they are someone's family heirloom or something that someone has assured me is worth growing.  They tasted terrible (comparatively) and are low yielding.  I will not save seed from this horrible plant and will not grow them again.

Hillbilly - very glossy
Hillbilly
Hillbilly (12/02/2014) has firm flesh that is reasonably dry and smells great.  Tastes similar to a store bought tomato but much better, it smells fruity somehow.  The fruit is uniform in size and shape, good size for slicing onto a piece of bread.  The orange/yellow glossy fruit is interesting to look at but may cause people to turn up their nose as it is not red.  Probably not my favourite tomato this year but still pretty good, far better than most people have ever tasted.  This plant produced a medium yield over the season, it has regular leaf and is indeterminate.

Giant Siberian Pink
Giant Siberian Pink
Giant Siberian Pink (12/02/2014) these grew some large tomatoes!  Wow, look at those things.  They were pretty uniform in large size and most were very round.  I am not overly fond of large tomatoes as they hang on the plant so long to ripen and a lot can go wrong during that time.  They look suspiciously like Julia Child, I could not tell them apart by sight, but the texture could not be more different.  Firm flesh, it has a lot more seeds than Julia Child.  This plant produced a medium to large yield (medium number of fruit, super large size) over the season, it has regular leaf and is indeterminate.


Unnamed Red Stuffer
Unnamed Red Stuffer
Unnamed Red Stuffer (12/02/2014) red round medium sized fruit that is hollow.  The seeds stick together in a tight clump in the middle and are simple to remove making this a good stuffing tomato.  They tasted much like a store bought tomato before they were completely ripe, their taste intensified a lot after they ripened properly.  Even though this is a stuffing tomato it still went well on a sandwich.  I don't think this variety is stable yet.  This plant produced a medium yield over the season, it has regular leaf and is indeterminate.

Yellow
Yellow (12/02/2014) beautiful medium to large yellow fruit sometimes with green shoulders.  The plant was one of the first to flower but the fruit took a long time to ripen which is a negative as the fruit hangs so long.  The flesh was soft and moist, they taste pretty amazing and are low acid.  This is one of the most useful and best tasting tomatoes that I grew this year.  I think this variety is stable now.  I really like this variety for a number of reasons.  The fruit splits a little but that doesn't seem to affect the storage time.  This plant produced a medium to large yield over the season, it has regular leaf and is indeterminate.

Speckled Roman, more beautiful in real life
Speckled Roman
Speckled Roman (13/02/2015) stunningly beautiful looking red roma style tomatoes with yellow/orange stripes.  Each tomato has unique swirls, stripes and patterns inside the fruit with very few seeds.  It has a deep rich tomato taste, it is meant to make a great paste or sauce and I love it on a sandwich, much like a great tasting roma tomato that looks amazing.  I prefer this to Roprecco Paste as it tastes better, looks better, has larger fruit, and is indeterminate.  Roprecco paste seems to have a higher yield than this one but this provides fruit over a longer season instead of all at once so ther is a trade off to be made.  This plant produced a decent yield over the season, it has regular leaf and is indeterminate.

Pineapple some had much more red
Pineapple tomato
Pineapple (17/02/2015) not quite round, yellow orange (to red) bicolour that looked nice.  Some fruit were as large as the Giant Siberian Pink, others much smaller.  The inside of the fruit was also pretty with swirls of colour through the yellow.  Some tomatoes had a thick core that had to be removed before eating, others from the same plant did not.  Flesh was very firm, dry and contained few seeds.  This plant produced a good yield over the season, it has regular leaf and is indeterminate.

Reisetomate - not quite ripe
Reisetomate fruit
Reisetomate, every fruit is unique and beautiful
Reisetomate (19/02/2015) first fruit from seed grown plants ripened about 2 months after the overwintered plant.  Fruit ranges in size/shape/number of lobes quite a bit.  I love this tomato, it tastes so intense, even a little on a sandwich with a more bland tomato livens things up a lot.  The deep red fruit has odd lobed shapes that can be pulled apart like the segments of an orange, the flowers and fruit look very unique and interesting.  This plant produces a large yield, it has regular leaf and is semi determinate.

This post is getting a bit long, I have been writing it since December though.  I will end here and continue this post in Best Heirloom Tomatoes 2014-2015 part 2

I may sell some of these seeds, if you are interested please look on my For Sale page.

Saturday, 4 April 2015

Snow White heirloom tomatoes


This year I am growing a bunch of different varieties of mostly heirloom tomatoes, some are incredibly difficult to find while others are far more common.  I will try to write a post comparing them all later in the season once they have all ripened or decided not to ever ripen.  For now I want to tell you about one of the best tasting cherry tomatoes I am growing which is called Snow White.

Cherry tomatoes are good, but many lack any real taste, they are often good for kids who like sweet things.  White tomatoes are good, but many tend to be a little insipid, that being said there are some amazing white tomatoes around.

I had heard that Snow White was one of the best tasting tomatoes ever bred and one of the best cherry tomatoes around, this had me intrigued.  I have also heard from others that it is nothing special and I would be better off growing other varieties.  A very generous grower sent me some seeds last year, how could I resist growing this and seeing for myself.
Snow White cherry tomatoes

The plant grew well in my garden while a few other varieties did not even survive, it flowered early and was one of the first tomatoes to ripen in my garden.  It seems to have a lot of flowers and unripe fruit on the plants at all times, being an indeterminate variety it should continue to fruit right up until frosts. 

The plants themselves are nothing remarkable, they grow about 6 feet tall here like many other varieties but I assume that they could grow a lot larger.  They have regular leaf and everything looks normal enough.  It would be nice if they were a dwarf plant or if they had potato leaf or something, but in the end none of that really matters.  The plants grow well under adverse conditions, provide large yields, but it is the taste that truly matters.

The first tomatoes I picked may not have been properly ripe, the seeds in them were not properly formed so it may not have been pollinated properly, or perhaps they get better as the season progresses, all I know for sure is that the first few were not indicative of this variety.  When I tasted them they were ok, nothing special, it is probably fair to say that the taste was a bit confused.  Considering that they were bred by Joe Bratka who is an excellent tomato breeder that has been described by those who know him as 'confused' or 'eccentric' I was not overly surprised.  The flesh was sweet and tasted a bit fruity, almost like a bland peach.  The seed part tasted like a regular cherry tomato, good but not great.  Overall it was good but nothing special, if the rest of the tomatoes tasted like this I may not want to grow this variety again.  The tomatoes ripen to a very pale yellow if they are in the sun or white if they do not get any sun on the fruit. 
Snow White tomatoes - yellow in the sunlight
Visually they looked good enough, they produced a lot of tomatoes, but due to the fact that there are thousands of varieties of tomato available in Australia I do not want to waste time or space if the taste does not blow me away.  I would rather keep trying to find something amazing. 

Then there was a week with no new ripe tomatoes, I was ok with that as they were not that great and the weather was odd.

Then the plant started to ripen again so I ate another tomato.  WOW.  They really blew me away.

Perhaps the first fruit were not great but since then they have been fantastic.  The tomatoes look much the same as the first ones, perhaps slightly larger, but the taste is amazing.  The flesh part tasted like delicious fruit, perhaps a peach or sweet ground cherry or something similar to that.  If I was to remove the seeds and blind test people I doubt that they would even recognise this as a tomato.  The seed part tasted like a good cherry tomato, a little acid but not too much.  The two parts together compliment each other well.  I love this tomato, I want more of them, I walk past the plant a few times each day in the hope that another one has ripened. 
Snow White hidden in the back of this part of the garden
The kids love this tomato, in my mind this is one of the best sweet tomatoes that I have eaten.  They are low acid so good for people who normally can not eat tomato.  I probably wouldn't use it to make paste or sauce or for cooking (although many people claim they are great for this) but happily eat them fresh or in salads.  They are remarkable.

I would almost go as far as to say that they are unique, but they are not.  Apparently the man who bred these also bred a few others which were much the same or exactly the same or just renamed this variety.  It doesn't matter too much, what does matter is that these are amazing and I plan to grow them again and hopefully grow a few more plants so I get more of them. 


Why are these tomatoes rare?

I have often wondered why this kind of thing is not more common, if they are so great (and these tomatoes do taste great) why are they not available at the supermarkets.  People often talk about home tomatoes being better because they are picked perfectly ripe instead of mostly green, or that they are fresh, or that they are too soft to be transported, and a few other things like this.

I am sure this is part of the answer, but I think one of the biggest problems is marketing.  People think of tomatoes as red, they are wary of any other colour.  Bright yellow tomatoes have started to become better known and appreciated in salads for their attractive colour.  Some of the brown/black ones have started to come in, but they have backing from a multinational company who holds a lot of power.

These are 'white' tomatoes, they mostly ripen a pale yellow.  Many people think pale colour means tasteless or not fully ripe.  The difference between 'white' tomatoes and yellow tomatoes is that the white ones have translucent skin.

Some people have asked me if yellow tomatoes taste the same as 'normal' tomatoes.  I don't know how to answer them.  Where do I even begin?

Unfortunately this means that the average person will never try these amazing little tomatoes unless they grow them at home as they will not be seen in supermarkets anytime soon.  Some of the best tasting varieties of tomatoes ripen green, many people will not even try them, that is their loss.


Where to get Snow White tomatoes

Seeds of snow white tomatoes are reasonably simple to find in Australia.  Snow white tomato seed seems to be carried by a few different sellers as well as ebay.  I have saved seed from my plants and will most likely sell some on my for sale page with other heirloom vegetables and perennial vegetables.

Monday, 23 March 2015

How to graft tomato to a potato

Question:  What do you call a plant that is a tomato and a potato grafted together?  A tomtato?  A potmato?
Answer:  I don't know and I don't care.


Grafting Tomato scion to Potato rootstock

Potatoes and tomatoes are both closely related, they can be grafted to each other easily enough.  With a little effort a chilli, tomatillo, potato, tomato, ground cherry, eggplant and a few other things including some agricultural weeds can graft onto one another as they are all closely related.  If you could be bothered they could all be grafted onto a strong rootstock and a multi-grafted vegetable garden shrub could be created.

Many varieties of each of these plants are perennial, so in theory if a hardy perennial root stock was chosen a grafted perennial vegetable plot in one plant could be the result.  Yields would be low for each plant and care would need to be taken to ensure one graft did not take over the others, but it would be easy enough to create.  Perhaps I should make one next year just to prove how simple it is.

About 20 years ago I grafted the top of a tomato plant to the bottom of a potato plant.  I did not have grafting tape or grafting clips but I did misappropriate some plumbing tape from school and used that.  I had never grafted anything, I had never seen anyone graft, I had no one to answer questions or guide me, I had no books to read (and as far as I knew the internet did not exist) but I had heard about grafting so decided to give it a go.  How hard could it be?

I had hopes of getting two crops for the same amount of space and water.  It kind of worked, I guess.  I certainly got a crop of tomatoes, but the non grafted one in the next row cropped better.  At the end of the season I certainly got a crop of potatoes, but the non grafted potatoes returned a far larger crop.  Both crops tasted just as they should and looked normal.  The grafted plant used quite a lot more water than I would have expected, much more than the tomato plants or the potato plants in the other rows.  I considered it to be a failure due to the extra work resulting in lower crops an higher water for the same amount of space, in hind sight it was probably a success as the plant lived and cropped and I learned from the experience.

Recently I have seen these grafted tomato/potato plants being sold.  One very arrogant man claims that he is a genius who invented this process about 5 years ago.  Too late, I did it 20 years ago when I was a teenager and I seriously doubt that I was the first to try this successfully.

A few people claim that this method of grafting increases yields from both plants, unfortunately from my experience I do not believe them.  You will get both crops, but the crops are both smaller.  Larger crops from a grafted plant such as this is illogical.  If you do not have much space and can only grow one plant then this trade off may be well worth it.  I don't see the need to make erroneous claims, people will still buy the plants if you tell them the truth.  I sell a lot of interesting vegetables, there is no need to exaggerate as people who want them will buy them.

It would be interesting to see just how poorly these grafted potato tomato plants crop.  I should run some field trials to see if growing potato and tomato in the same pot will yield differently to a grafted tomato potato.  I wish I did not have to go to work so I had more time to do interesting experiments like this.

I also have read about someone from a large plant/seed/gardening company who claims to have been the first to have ever thought of the idea 15 years ago (but never actually tried it until more recently), again I not only thought of this but successfully tried it earlier than that!  If a teenager with no experience, no resources, no education or mentor can do this it can't be that difficult and I wish people would stop trying to big note themselves with such simple things.  I honestly believe that people have been trying this and succeeding for a few hundred years but it has not gone anywhere as the yields are too low to bother.  This type of grafting is simple, it is unproductive which makes it uncommon, being uncommon means that people have not seen it before and are often taken in by these lies.  Perhaps next Spring I should run some grafting courses and teach people how to create these grafted plants at home.

Tomato flowers

Reisetomate tomato flowers


Grafting Potato scion onto Tomato rootstock

Enough of my rant (for now), I don't want to talk about grafting the top of a tomato the the bottom of a potato.  I want to talk about the opposite.

This year I grafted the top of a potato plant (called the scion) to the roots of a tomato (called the rootstock).  You may ask why the devil would anyone do that, the resultant grafted plant would produce neither tomatoes or potatoes so would be a waste of time and space.  Well it is simple, I wanted potato seed.

Modern potatoes are grown from existing potatoes, they are genetic clones of their parent, it is essentially the same plant.  Seed potatoes are just small potatoes, a stem fragment from the parent.

I wanted to grow potatoes from seeds, true seeds, each and every one of them would be unique.  Some would be dreadful, some mediocre and perhaps some would be great.  I wanted to see if I could create a new variety that is better suited to my needs and will grow better in my climate.  To do that the potato plant needs to flower, then it needs to grow fertile seeds, often a potato left to itself refuses to flower.  Grafting onto a tomato will help to make this happen.

When I was a child we had an unknown variety of potato that would set seed each year.  I used to grow these seeds and nothing great ever came from them.  Each seed grown plant was different, they grew differently, some had slightly different colours, but the parent stock was dodgy and did not have the genetic potential to grow anything truly great.  I used to think it was my fault that nothing exceptional came out of that and felt like a failure, now that I am better educated I know that I actually achieved a lot back then.

I have a variety of potato that never flowers in my climate.  I don't know if it flowers anywhere.  Many modern potatoes no longer flower.  It is a great variety, it is easy enough to buy, but it struggles to crop well in this climate.  When I have grown this variety in other climates and without exaggeration it has cropped about 20 times higher than it crops here (I weigh things and keep pointlessly accurate records).  Planting certified virus free seed potato into new soil does not help, this variety struggles in my climate as it is not really suited to growing here.  But it tastes so good which makes me want to grow it.

If I could get some seed from this potato there is a chance I could grow a similar tasting potato that crops well here.  To do that I need it to flower and set viable seed.  This is a decent parent plant and has the genes to produce some exceptional new varieties of potato, but in the 7 or so years I have grown it I have never seen any flowers.

This year I grafted that potato scion onto tomato rootstock to induce flowering and hopefully convince it to grow fruit and set viable seeds.  As the potato will not be putting any energy into tuber formation it will be more likely to flower and more likely to have the energy to set viable seed.  I chose the most vigorous tomato I have and grafted them using 'tongue approach grafting' or 'inarching' as it is the simplest and most fool proof way to graft.  This is how grafting happens most often in nature, it is simple, fast to do and once done it is very low maintenance.  I could have chosen other forms of grafting but why make things harder than they have to be.
Picture thanks to http://extension.umass.edu/floriculture/fact-sheets/grafting-techniques-greenhouse-tomatoes

I grew a tomato seedling in a pot and the potato plant in the soil.  When the plants were both the right size (ie it had nothing to do with size, it was when I could find the time) I put a small cut into each stem part way through.  I then joined the two together and bound them with plumbers tape.  I still do not have grafting clips or grafting tape, but the plumbing tape works well enough for me, this time I bought the tape instead of helping myself to it.  Then I left the plants with two tops and two sets of roots so that the graft union could heal.  Perhaps my description is not that useful, the picture above shows roughly how I did it, but my plants were larger and much older than in the picture.

After the graft had taken (ie several weeks later when I found time) I cut off the top of the tomato and the bottom of the potato and was left with a grafted plant with tomato roots and potato leaves.  The potato plant went on to continue growing and eventually produced a crop (which is why it was in the soil to begin with) and the top of the tomato was used as a cutting so nothing was wasted.  I had a grafted plant in a pot which I planted into the vegetable garden.

I then had a plant with the roots of a tomato and the top of a potato.  I left the grafting tape on for another week or two then unwrapped it, the union was strong enough by this time and the tape was getting too tight.  The tape could possibly be removed earlier but this works for me so I have not experimented with other methods.

We are hoping to sell our house so I only grafted the one plant.  I did not want to put in a lot of time to graft a lot of plants only to sell and move leaving behind treasures like this that would not be appreciated.  Unfortunately we still are yet to find the right buyer, had I known this I would have planted a lot differently this year, hind sight is great.

This grafted plant flowered well, extremely well.  Considering that I have grown this potato variety for so many years and never seen a flower I think it is safe to conclude that grafting the top of a potato to the roots of a tomato actually does help the plant to flower.

There are a lot of different pollinators around my garden, I never saw them on the potato flowers but they may have been there when I was not looking.  I tried to pollinate the flowers in the same way that one pollinates tomato flowers, I think it worked.
grafting potato to tomato
Potato Flowers - the grafting worked
The plant started to produce fruit.  This is exactly what I had hoped would happen.  Then the ducks got in to the vegetable garden, they stomped around the garden a bit, broke a lot of plants, ate some leaves off things, messed around stealing vegetables and ate some fruit off the trees.

The grafted potato/tomato plant was still alive but all the fruit was missing, I don't know if the ducks ate the fruit or if they rolled away somewhere.  If they rolled away there is a chance they may grow next year but I doubt I will find them or even know that they are not just the normal potatoes.  The grafted plant continued flowering for a while but those flowers all aborted and did not produce any fruit, probably due to the heat.

If I try this again the next time I will try to graft a few more plants to help provide a little insurance against this kind of thing.  Nothing much can be done now apart from wait.

Since writing this post I have wondered if I should dig up the grafted plant and try to overwinter it.  I know the tomato rootstock can survive if I protect it from frost but I am not sure about the potato part.  I wondered if it was worth my time even trying, perhaps it would flower and set seed better, perhaps it would simply die, I don't know anyone who has tried to keep a plant like this alive for several years.  Come to think of it, I don't know anyone who has created a grafted plant like this one.

Once again the ducks got into the vegetable garden, they kind of made up my mind for me.  The top of the plant is now dead/missing, the roots are possibly still alive, if they sprout leaves I will let the frost kill it when it is time.  This type of grafting is worth another try if I have any land next year as it seemed to help the potato to flower, once I get this potato variety to produce viable seed then the fun part begins.  Perhaps I should get a different type of potato that flowers and fruits readily and cross them.  For now I am happy that grafting helps flowering and fruit set.

Sunday, 22 February 2015

Tomatoes: Potato Leaf vs Regular Leaf

People often talk about regular leaf tomatoes or potato leaf tomatoes, I get a few questions about this so I figured I would write a post explaining what is meant by these terms.  I have also seen one place sell a variety of tomato that they call "potato leaf tomato" and I find this confusing as there are many varieties of potato leaf tomatoes, I am growing 4 of them this year myself.

Have a look at these two leaves, they are both leaves from tomato plants.  Please ignore the yellowing, that has nothing to do with leaf type, that leaf is a bit older.
Potato Leaf compared with Regular Leaf
It is not too difficult to tell them apart, the leaf on the left looks like the leaf on a potato plant, the leaf on the right looks like the leaf on most varieties of tomato.


Regular Leaf (RL) tomato
Regular Leaf (often abbreviated RL)
This is the typical leaf type that most people are familiar with, most varieties of tomato are regular leaf.  The leaf edges are serrated quite a bit.  There are a lot of variations on this basic theme in terms of the width/length of leaf depending on the specific variety, climate and growing methods.  There are a few other variations such as angora, variegated etc but they are not easy to come across in Australia so I wont talk about them.  Some leaves are very narrow and are sometimes called 'dissected', others are wispy or droopy or look like the foliage of a carrot.  These are easily recognised from a distance even by my 5 year old as the leaves of a tomato plant.  All of this is referred to as Regular Leaf (RL).


Potato Leaf (PL) tomato
Potato Leaf (often abbreviated PL)
These leaves usually have very few interruptions of the leaf edge.  They are fat and large leaves. Newly germinated seedlings sometimes don't show their PL nature until they are a few inches tall, others show it as soon as they grow their true leaves.  PL leaves often have a thicker cuticle than RL leaves or a higher density of trichomes (which are tiny little hairs on the leaf).  Some claim that makes them more tolerant of foliage diseases but I have seen no proof of this.   Leaf shape can be different on a single plant with some showing more or less smooth edges, all of this is normal for PL.  Scientists have divided the PL leaf forms into various different classes but few of them are available in Australia and it makes no real difference so I wont write anything about them.


What is the deal with growing Potato Leaf tomatoes?

Some people claim that potato leaf tomatoes taste better, unfortunately that is a half truth.  Almost all Potato Leaf tomatoes are heirlooms and generally heirloom tomatoes taste great.  Some tomato varieties have a Potato Leaf version as well as a Regular Leaf version, I can not taste any difference.

People often claim that Regular Leaf tomatoes do not cross pollinate while Potato Leaf tomatoes will cross readily.  Unfortunately this is not at all true.  Most modern bred varieties of tomato will not cross pollinate easily (literatures states around 5% crossing without intervention when being grown side by side), almost all heirloom tomatoes do cross pollinate, some far more than others.  As most Potato Leaf tomatoes are heirlooms people have got themselves confused here.  The tomato I grow that crosses most readily is Reisetomate, it is a regular leaf plant.  It cross pollinates so much that I even grow it in a separate garden to all my other tomatoes.  Try not to be fooled, Potato Leaf does not necessarily mean heirloom, just as heirloom does not necessarily mean Potato Leaf.

Potato Leaf is considered to be a recessive trait.  When breeding new varieties if Potato Leaf is crossed with Regular Leaf then all the seedlings will be Regular Leaf.  This makes it useful to see early on  if the cross has worked or if the flower self pollinated and the plant is worth growing on or not.  If growing different varieties of tomato then Potato Leaf can also indicate early on if that particular seed has remained pure.  If a potato leaf variety grows regular leaf the chances are high that it has crossed.  Some potato leaf varieties do occasionally throw a regular leaf plant even when they have not crossed, so things do get a little confusing here as there is a little more to it than a simple dominant/recessive trait.
Potato Leaf tomato
"Julia Child" a great potato Leaf tomato variety
I have heard theories about potato leaf being more resistant to insects and regular leaf being more resistant to insects and visa versa, but I have found nothing conclusive that back up this.  Potato leaf would possibly restrict airflow more than regular leaf, so it is possible that potato leaf would face more mold problems in damp environments but again I have no proof that confirms or denies this.  I live in an area of low humidity, so it doesn't matter to me in the slightest.

I have also heard anecdotal evidence that potato leaf varieties are more 'hungry' than regular leaf as they require more resources in order to build more leaf, again I am yet to find any research that either backs or refutes this claim.  It kind of makes sense to me, but some of the largest tomato plants I have ever seen have been regular leaf, I assume they used a lot of resources to grow that large.  I have one regular leaf tomato that grows a large shrub to about 8 feet in every direction, it is surely using a lot of resources to build all of that stem.

Some people think the Potato Leaf plants look nicer, I certainly think they look more ornamental and would not look out of place in a flower garden.  To be honest, I wish that I had more potato leaf tomato varieties as I simply like the look of them.

At the end of the day though the leaf shape makes no real difference to me and I doubt it makes any real difference to taste, growth rates or anything other than aesthetics, so I base my planting decisions on the taste of the fruit and performance of the plant.

I do sell seeds of some heirloom tomatoes as well as perennial vegetables on my for sale page, you should have a look if you are interested.