Showing posts with label Berries. Show all posts
Showing posts with label Berries. Show all posts

Monday 12 February 2024

Mulberry tree for food security

A mulberry tree is like a vegetable garden on a trunk.  

Mulberry trees are well known for producing delicious berries.  What many people do not realise is that mulberry trees also produce abundant and surprisingly nutritious leafy greens.  

I have cooked and eaten mulberry leaves, they taste nice and can be used like spinach or silverbeet.  I have only cooked eaten young leaves.  I imagine older leaves would be too fibrous and I can't imagine raw leaves to taste all that nice.   

Mulberry leaf as a vegetable

While there is little mention of them on the internet, mulberry leaves are eaten as a vegetable in several places such as Cuba and Latin America.    

Mulberry trees produce well with little (or no) irrigation, can thrive in many climates from frosty temperate areas to the tropics, thrive on many different soil types, they have few significant pests, and they produce well on many different soil types.  Mulberries are remarkable trees that are drastically underutilised for food security, they are excellent fodder for livestock, and are a great vegetable for people.  

The taste of cooked mulberry leaves is ok, not bitter or objectionable, but also not remarkable.  I have started to see people sharing recipes using mulberry leaves to wrap lamb or chicken or rice or tofu, similar to how people use grape leaves.  Given how nutritious and abundant they are I think mulberry leaves deserve to be eaten more commonly.

Stuffed mulberry leaves - image from https://maryamsculinarywonders.blogspot.com/2019/04/1234-freekeh-stuffed-mulberry-leaves.html 

Mulberry leaves typically contain more than triple the amount of protein found in many vegetables, and under normal circumstances mulberry trees can produce up to double the amount of protein per acre compared to soy.  

If you don't already have a mulberry tree, you should consider growing one.  Mulberry trees are one of the simplest fruit trees to grow, they grow very fast, and mulberry leaf is the easiest vegetable for beginners to grow and the most productive vegetable for beginners to grow.  

Cutting grown mulberry tree

A study was undertaken comparing the nutritional value of fresh leaves from six different genotypes of mulberry.  Even though there is a bit of a range of values between cultivars it demonstrates that mulberry leaves are far more nutritious than most vegetables we commonly eat.   

I have summarised their findings below:

  • Moisture 71.13 to 76.68% 
  • Protein 4.72 to 9.96% (most vegetables have about 2% or less) 
  • Ash 4.26 to 5.32% (ash is the mineral content: calcium, phosphorus, magnesium, zinc, etc) 
  • Neutral Detergent Fiber 8.15 to 11.32%  
  • Fat 0.64 to 1.51% 
  • Carbohydrates 8.01 to 13.42% 
  • Energy 69 to 86 kcal/100 g 
  • Vitamin C 160 to 280 mg/100 g (oranges have 50 mg)
  • Beta-carotene 10,000 to 14,688 mcg/100 g (carrots have 8,729 mcg)
  • Iron 4.70-10.36 mg/100 g (spinach has 2.6 mg)
  • Zinc 0.22-1.12 mg/100 g 
  • Calcium 380-786 mg/100 g (full fat cow milk has about 120 mg)

Recently a desktop review was conducted comparing several options for households producing all their own protein when there are future disruptions to supply chains.  Their conclusions were unrealistic at best, but they made me think about back yard food production.  

We have a good size vegetable garden, but it is nowhere near large enough to supply our household with all our protein requirements.  We also have a few egg laying chickens, and some fruit trees, including a white mulberry (Morus alba) and a white shahtoot mulberry.  

Following on from the growing protein study linked to above, and given how nutritious mulberry leaves are, I wondered how many mulberry trees I would need to produce all my protein for a year.  So, out of curiosity I crunched some numbers similar to the desktop review.  The results were interesting.  

Mulberry leaf stuffed with chicken - image from https://www.greenprophet.com/2013/05/stuffed-mulberry-leaves-recipe/

A lot of research has been conducted into mulberry tree leaves as they (mulberry leaves, not the berries) are commercially important due to silkworm farming.  I used this research to work out how much protein a mulberry tree can produce, and how many trees would be required for a year supply of protein.  

Often, about 9,600 mulberry trees are grown per hectare or almost 4,000 per acre, this works out to just under one per sqm.  Yields of fresh leaves range from 3.2–21 tons/acre/year (8–52 tons/hectare/year) with most in the 8–12 tons/acre/year (20–30 tons/hectare/year).  This means that on average, each year roughly 2.5kg of leaves are harvested per mulberry tree.  

The protein in mulberry leaves ranges from 15-35% dry weight, or 4.72-9.96% of the fresh weight.  I used 6.5% for the protein content of fresh leaves in my calculations, which is lower than the average.  That works out to 162.5 grams of protein per tree being produced from leaves alone, meaning a one year supply of protein for one person can be provided by the leaves harvested from approximately 112 mulberry trees.   

Mulberry leaves are abundant vegetables

To give this perspective, commercially potatoes yield about 4kg per sqm, providing about 80 grams of protein per sqm.  That’s about 228 sqm of growing area for potatoes per person if relying solely on potatoes to meet protein requirements.  Mulberry trees would only use about 53% of the total land that would be required to grow potatoes and produce the same amount of protein.  As I said earlier, a mulberry tree is like a vegetable garden on a trunk.  

Soy is a legume crop that is known for producing high amounts of protein per acre.  Soy is said to produce up to 513,066 grams of protein per acre.  

Around 4,000 mulberry trees are planted per acre, each yielding 2.5kg of leaves with 6.5% (or more) protein fresh weight.  This produces over 650,000 g protein per acre, which is significantly more protein per acre than soy.  

If growing a mulberry variety with 10% protein in fresh leaves it would produce double the amount of protein that soy can produce per acre.  Mulberry trees produce more protein per acre than soy.  

White mulberry tree outside my back fence 

Comparing the water requirements is a bit more difficult and far less accurate, so you have to take the following 'with a grain of salt'.  

Not surprisingly, I could not find any publications directly comparing the water requirements of mulberry and soy.  According to Agriculture Victoria (https://agriculture.vic.gov.au/crops-and-horticulture/grains-pulses-and-cereals/growing-grains-pulses-and-cereals/growing-soybean-in-victoria), soy requires an average of 2.6 Megaliters of water per acre.  According to the Rural Industries Research and Development (https://agrifutures.com.au/wp-content/uploads/publications/00-056.pdf) mulberry tree plantations require less than 1.3 Megaliters per acre.  

Using the above calculations it appears that mulberry trees could produce about double the amount of protein per acre compared to soy, while using half the irrigation.  Mulberry trees can produce good amounts of protein per acre in marginal areas where soy will not produce any crop because the climate and soils and climate are not right for soy.  

Who knew that mulberry leaves can produce that much much more protein per acre that soy!  

Mulberry cutting

Does all of this mean I am suggesting that people should grow 112 mulberry trees each to produce all their protein needs?  Absolutely not.  

Even though it would be really cool, replacing the lawn with an orchard of heavily coppiced mulberry trees isn’t something that people would want to do.  

While growing this many mulberry trees may be possible in some yards, and would take less time and effort to look after than the average lawn of the same size, I don’t think it is realistic, and I'm not planning on doing that.  

10cm tall to 6 feet tall in under 5 months

I can’t imagine what a miserable existence it would be having to eat about a kilogram of mulberry leaves each and every day to meet your protein requirements.  I don't know what you would do over winter while the deciduous trees are leafless.  

I am not suggesting you plant 2 or 3 mulberry trees, and eat nothing but mulberry leaves for a few weeks each year.  I am also not suggesting that you should grow a mulberry and regularly incorporate its leaves in your meals over the growing months. 

Mulberry leaf plantation
Mulberry leaf plantation. Image by Nahid Hossain, Creative Commons 4.0 license

What I am suggesting is growing a mulberry tree, or several mulberry trees, is a good idea if you have the space.  It will add to your food security even if you never eat the leaves.  

The estimated leaf yields above are based on coppiced trees that are regularly harvested for silkworm production.  When grown like this there are no berries, just leaves.  

Most backyard mulberry trees would not grow like this, most would be allowed to produce berries and develop into large trees with a single trunk or as a multi trunked tree.  As the trees grow larger, they produce increasing yields of both berries and leaves.  

The FAO mentions very old trees in China producing 400kg of berries and 225kg of fresh leaves in a year.  What an incredible sight they must be!  

My mulberry producing food from otherwise unused land

A mulberry tree would increase your food security.  Each year you can eat some berries (they are utterly delicious), or you can grow the tree in your chicken run and let your chickens eat them, if your chickens eat all the berries you will save a little money on chicken feed and help your chickens be a little healthier.  Or you can let the birds take care of them for you.  From time to time the leaves can be eaten, or made into tea, or just left alone to allow the tree to gain energy and grow larger.  

During times of financial hardship, you hear regular stories of vegetable gardens being raided and produce being stolen (and/or destroyed).  While people would probably take some berries, it is unlikely during an emergency that your neighbours would take any leaves from your mulberry tree as they would not recognise them as being edible or as being high in protein and vitamins.  This adds to your food security as you would have a tree full of leaves to cook if you ran low on everything else.  You could use the leaves like spinach, except mulberry leaves are far more nutritious.  

Fresh mulberry leaves can grow large

Chickens and other small animals enjoy eating mulberry leaves.  When hard times hit, you may be unable to buy food for chickens or other little animals .  You certainly don't want them to starve.  The mulberry tree can be used to reduce the amount of bought feed you are using, to get you through until you are able to buy animal feed again.  This also adds to your food security.  

Mulberry trees appear to be the ultimate perennial vegetable.  Most people who have eaten the leaves cooked enjoyed them, some felt neutral about them, so far I have never met anyone who has disliked them.  People tend not to eat mulberry leaves as a vegetable often due to the cultural taboo surrounding eating tree leaves.  For some reason we have been told to view tree leaves as a famine food rather than a sustainable and easy to grow perennial vegetable.  There is nothing wrong with eating healthy organic leaves from mulberry trees.  

Having a nice-looking shade tree in your yard, that is able to provide you with delicious berries in season, and a few handfuls of vegetable leaves if needed, seems like a sensible thing to do.  If you can get past the idea of tree leaves being famine food, all the better! 


Friday 15 December 2023

Fragaria virginiana breeding larger berries

I grow a few different strawberries, some different species and some garden strawberries.  One of the species of wild strawberries I grow is Fragaria virginiana

Fragaria virginiana strawberries
Fragaria virginiana strawberries

F virginiana comes from North America.  This species was used as one of the two main parents to develop the garden strawberries that you can buy from the shops.  This was used as a parent due to its great taste, the other parent was used for its larger sized berries.

The taste of these berries is similar to a garden strawberry, but nicer, and more concentrated.  The original berries were too small for my liking, so I decided to do some breeding for larger berry size.  

Larger F virginiana strawberries

When I first got seeds of this plant they took a while to grow to maturity, the resultant berries were about the size of your finger nail.  The berries tasted great, but were too small.  Even the smallest berries in the photos are larger than the original berries.  I don't know what size berry is normal for this species, I know there are several cultivars overseas with larger berries.  I think the wild ones tend to be a lot smaller. 

I originally obtained seed that had been collected from the wild.  These tiny berries certainly had great taste.  They also had a lot of genetic diversity, which made this selective breeding project a lot simpler.  

I collected seed, grew out a lot of plants, culled the ones with the smaller berries, and grew seeds from the ones with the largest berries.  I did this for a few years.  

It takes time for these to go from seed to fruit, and these only flower once or twice per year in my garden, so this project took quite a while before I could see any progress.   

Saving seed from strawberries, and growing it out to maturity, is fiddly.  Luckily you get a lot of seed per berry, and a lot of genetic diversity combined with a lot of seed means there is a good chance of stumbling across the right plant.  Growing out large numbers helps your chances of getting the right genetic combination.  

Some are too small and will be culled

After a few generations it was clear that the berries are significantly larger than the original ones.  As you can see in my photos, some plants produce larger berries than others.  It takes the same space and effort to grow tiny berries as it does larger berries, so the smaller ones are culled.  

This is still the same species, it has not crossed with any other species, or messed around with ploidy levels.  I have selected for larger berries through growing many seedlings and culling hard.  Some of the smaller ones also don't look typical of this species, given they open pollinated they may have crossed, so I have also culled anything that appears to be an off type.  

I was worried that the taste might be diluted in the larger berries.  I am happy to say that this has not been the case.  The larger berries taste the same as the smaller berries.  When under ripe they are not great, but when ripe they taste incredible.  

These plants all produce runners in my garden.  This means I am able to cull the smaller ones and propagate the larger ones quickly and easily.  If they did not produce runners it would likely mean another 15 or so years of growing out seeds to produce a stable variety, so runners are great.  Runners also mean the plants spread to different parts of my garden, if we have another dry summer that kills off lots of things there is a chance one runner will be sitting somewhere protected and I will be able to us it to restart the patch.  

Realistically this is probably the largest berries that these plants can produce through selective breeding.  I think they have reached their genetic potential.  I will still try to grow seed from the largest ones and see if there are any further gains to be made, but I am not expecting much from here.  

If I were to induce polyploidy, or hybridise with another species I know the berries could become far larger, but I have no plans for attempting things like that.  

Further breeding work could be done with these to introduce day length neutrality, or more flower production.  I am not sure if my stock has the genes needed for this, and I probably can't source any Fragaria virginiana with the needed genetics, so it is unlikely I will breed towards this any time soon.  


I sell bare rooted plants of the largest ones through my for sale page.  The plants flower in spring and fruit spring/summer.  Sometimes they provide a second crop in autumn.  They produce many runners and can fill a garden bed relatively quickly.  Their productivity is low, but they make up for that in great taste and ease of growing.

Fragaria virginiana breeding


Saturday 2 December 2023

Raspberries: yellow red and black

I do a bit of vegetable breeding, I also breed other plants with various different aims.  

A number of years ago I bred a new variety of red raspberry.  I acknowledge that I am biased - I like this raspberry (Rubus idaeus).  It is genetically thornless, very vigorous, incredibly productive, produces dozens of flowers per cluster, fruits multiple times per year, and tastes nicely sweet.  This red raspberry performs better in my garden than any other raspberry variety I have grown.  I am told it does not grow as well in subtropical gardens.  

I eventually tracked down a yellow raspberry (Rubus idaeus) and did a little breeding with this too.  This one has thorns (prickles).  It only crops once or twice per year and has flowers in clusters of about half a dozen.  The berries are pretty, they smell divine, and it tastes very sweet.  What it lacks of the typical raspberry flavour it makes up for in delicate floral notes.  I need to do more breeding with this to create a thornless primocane version.  

After some years I got a black raspberry (Rubus occidentalis).  This is a different species of raspberry to the red (or yellow) raspberry.  It is not a blackberry.  It is not a loganberry.  It is not a youngberry.  It is not a mulberry.  It is not any other kind of berry, this is a black raspberry.  

It drives me crazy how difficult people seem to find the concept of a black raspberry in Australia, but I digress.  

Black raspberry comparison
Yellow, red, and black raspberries

My black raspberries have a rich complex taste and aroma.  It is not as sweet as my other raspberries (neither are store bought raspberries), but it is not what I would consider to be sour.  They have a nice taste, it does not taste the same as a red or yellow raspberry, and it is not meant to be the same as them.  It does taste a bit like a raspberry, but also very different.  Black raspberry tastes nothing like a blackberry, and tastes nothing like a mulberry.  There really isn't anything I have eaten that they taste similar to.

I am bad at describing taste, my description above really doesn't describe it well.  The internet says black raspberries are "tangy, richly flavored, mildly sweet, cooling, and high in antioxidants".  I am not sure that description is all that much better than mine.  

Yellow raspberry, red raspberry, and black raspberry comparison
Yellow raspberry, red raspberry, and black raspberry 

You will probably notice that the berries are a bit smaller than red or yellow raspberries.  My comparison photos are all typical sized berries.  Some berries from each plant are larger or smaller, but the ones in the photo give you a decent idea of what is normal.  While black raspberries are smaller, they are still a decent size.  While I would prefer them to be larger, I don't find them to be too small. 

These plants are not what I would consider to have low productivity, and they do not blow me away with the size of the crops.  They usually produce clusters of about half a dozen flowers.  This is comparable to most raspberry varieties including my yellow raspberries, but it feels like nothing compared to my red raspberry which produces dozens per cluster.  

In my garden my red raspberries have the longest picking season.  They start ripening first, finish last, and produce the most berries over the season.  My yellow raspberries start to ripen after the red raspberries have been cropping for a while.  My black raspberries start to crop once I have been picking both the red and yellow for a few weeks.  




Black raspberries grow well in my garden, but they need different management to red raspberries.  They have curved thorns, similar to a blackberry or a rose, and the thorns seems to grab at you when you walk past the plants.  This is worth noting if you want to grow one.

I grow mine in pots, they appear to do well in pots.  I have never had red or yellow raspberries perform well in pots for me.  

Black raspberries grow differently to red raspberries.  Red raspberries grow roots underground and send up canes from the tips of these roots, black raspberries do not do this.  Black raspberries will set down roots from the tips of the canes if they touch the soil.  



My black raspberries are a floricane variety, meaning that they flower and fruit on the previous season's growth.  This is good to know as it dictates the way you prune them.  

I don't prune mine at all and at this stage, but if I was pruning them I would need to ensure large canes from the previous year were intact so they could flower.  I imagine that tip pruning would encourage them to branch and be more fruitful.  I know that tip pruning my red or yellow raspberries increases the crop significantly as they produce 5 to 10 times as many flowers.

Much like my other raspberries, the black raspberries do not ripen all at once.  Each cluster will have some ripe berries and some unripe berries at the same time.  I pick them once ripe, and go back each day or so to pick more over the season.  A long picking season is great for home gardeners, but dreadful for commercial growers who have to employ pickers.  

It is simple to tell when the berries are ripe because they are black.  The berries start out green, turn red, and get darker until they ripen a black colour.  Ripe berries will pull away from the stem easily, if they resist pulling from the stem they usually aren't ripe enough.  Raspberries have a hollow core once picked, blackberries and youngberries etc do not have this hollow core.  


So far birds seem uninterested in my raspberries of any colour.  They also don't seem overly interested in my strawberries.  Perhaps I am just lucky, or perhaps the birds are too busy stealing all of my plums and apples to worry about berries.

My black raspberries seem to have more seeds than red raspberries.  Perhaps it isn't more seeds, perhaps they are larger seeds.  I am not sure, all I know is they are more noticeable.  I don't find the seeds very annoying, but they do get stuck between my teeth more often than the seeds from my red raspberries.

Black raspberries are simple to grow from seed, but it takes a long time before you get the first crop.  I am growing out some seed at the moment, and once berry season is over I plan to root some of the can tips.  

If I have a few extra plants I plan to offer them on my for sale page.  I don't have any spare plants at the moment but I am expecting to have a few to offer when they are dormant in winter or early spring.  

Raspberry comparison

Monday 20 November 2023

Pineberry strawberry

A few years ago we bought some Pineberry strawberry plants.  Pineberry are an old variety of strawberry that are a little different.  

Pineberry is a very old variety that is said to be a hybrid of two species of strawberry, the South American Fragaria chiloensis, and the North American Fragaria virginiana but they may also have other species in their heritage and probably some back crossing.  

Pineberry strawberries

Pineberry are not F1 hybrids, they are not GMO, they are an older variety that was produced by normal cross pollination.  While I say they are not F1 hybrids, this does not mean their seedlings will be anything like the seed parent.  Pineberry are hybrids of hybrids, their seeds produce a wide range of diverse traits.

Most fruit are interspecific hybrids of several species, and all garden strawberries (Fragaria x ananassa) are a hybrid of several species.  This means the fact that Pineberry are a combination of various strawberry species is of no concern.  

Pineberry Strawberry
Pineberry strawberries

I am unsure of pineberry's ploidy level.  Given that I don't plan to do any breeding work with pineberries, this does not pose an issue.  The seeds are viable, if planted they will not produce a pineberry, they will turn out to be a wide variety of different strawberries.  

It would be simple to breed a new variety of strawberry using pineberry as the seed parent.  Bag the flowers, transfer pollen from a different variety that has traits you like (such as larger fruit, day neutral, etc), and grow out the seeds.  You will know that it hasn't self pollinated as the plants are all female.   

Pineberry are smaller than garden strawberries

Unlike most garden strawberries, Pineberry strawberries only produce female flowers.  They need another variety of strawberry near by to act as a pollinator.  Most home growers tend to have more than one variety of strawberry, so this isn't an issue.  

The choice of pollinator won't affect the colour or the taste or look of the berries, so you don't need to worry about planting the wrong one.  Even if you don't have another strawberry variety, if you have a small block in town surrounded by neighbours there is a high chance one of them is growing strawberries, and insects happily (or to be more accurate, accidentally) transfer pollen for you.

Pineberry can not be grown from seed.  They are female plants, and any seed produced will be the result of pollination from a different variety.  Luckily they produce many runners and are simple to propagate.

Pineberry can be reasonably productive

Pineberry can be relatively productive, they produce numerous flowers which can turn into berries.  

Sadly, they only flower once or twice per year.  Pineberry are what is often referred to as 'June Bearing', a term comes from the Northern Hemisphere.  In Australia pineberries have one main flush of fruit which often ripens around November to December in my garden.  They can have a second flush of flowers or even a third some years, but this is not a given.

Pineberries

Pineberries can also flower profusely, and then abort all the flowers to produce no fruit.  I believe this is due to lack of pollination, or a lack of water.  

All strawberries need additional water to produce fruit in my garden.  

If no other strawberries are flowering nearby the fruit all aborts as pollination cannot occur.  I grow a bunch of different varieties of strawberry, so there is a good chance one of them will flower at the same time as pineberry and I can get a decent crop.

Pineberries are a little small

Pineberries produce berries that are white with red achenes (achenes are the things on the outside that people call seeds, the seed is inside this structure).  They are light green/white when unripe, it is easy to know when they are ripe as they get a pink blush.  If you cut one open, they are white all the way through.  

The taste and smell is reminiscent of pineapple, and they can be very sweet.  Occasionally mine taste sour and uninteresting.  I think this is due to lack of water or perhaps temperature fluctuations.  I don't tend to water my pineberries often, and I regret it when they fail to fruit well that year.  

Pineberries ripening

The berries themselves are noticeably smaller than garden strawberries.  Back when pineberry was easy to buy from nurseries or online everyone conveniently neglected to inform buyers of this fact.  

I have included a few photos of them next to garden strawberries for a comparison.  The comparison strawberries are a small-medium berry from a variety known as Melba.  


Melba and Pineberry

Pineberries grow well from runners in my climate, so you don't need many to establish a decent sized patch of them.  If you want to grow them, remember they are female plants that require pollination from another variety.  

I don't have the space or water or time to grow things that don't produce or don't taste great.  Pineberries are not my favourite strawberry, but they are good enough to retain a place in my garden.  

Ripe pineberries

Pineberries were popular for a while, and sold through Bunnings and as well as being carried by a few online seed sellers.  A few years ago these places stopped carrying them, I'm not sure why.  Perhaps they were not marketable once the fad had passed.  Now they are difficult to find and are once again drifting into obscurity.  

If you want to grow pineberries, I sell bare rooted pineberry plants through my for sale page.  Like all strawberry plants, they survive well through the post bare rooted.  

Friday 23 December 2022

Berry season - what's not to love!

I love berry season.  

Berry season came late to Australia this year, but is worth the wait!  

Below are some photos of our berries.  They taste so good.  We try to pick them when perfectly ripe, often rather soft.  They can't transport fresh berries when they are this ripe, so the only way to experience berries this good is to grow them yourself.

The darker berries below are thornless Youngberry.  They taste much like a boysenberry, can be eaten out of hand or they go tremendously well with ice cream.  Being so dark they are full of antioxidants, and they tend to add rich purple colour to ice cream.  

I love berry season

Youngberries and golden raspberries

Yellow raspberry - tastes floral and sweet 

Youngberry - tastes like boysenberry 

Sometimes the kids pick bowls full of mixed berries.  Whatever is ripe and easy to reach is picked first.  They are all delicious and their fragrance is incredible.  

Freshly picked berries, picked at their ripest, are far superior to anything you can buy from the markets.  Some of the varieties I grow are never found in the markets.  This means that the only way to enjoy them is to grow them myself.  


Berry season is here, and I love it!!!

Sometimes we only pick a few bowls of raspberries.  

I bred the red thornless primocane ones, they are nicely sweet.  This is what a red raspberry should taste like, rich, complex, and they smell like a delicious raspberry.  They are nothing like the raspberries you can buy from the market that are sour and bland at the same time.

The yellow raspberries have prickles on the canes and are a floricane variety.  The yellow raspberries taste very floral and have a unique fragrance.  A yellow raspberry tastes very different from a red raspberry.

My red raspberry is sweet and delicious 

The black raspberries are ripening and should be ready in the next few days.  

Not many people in Australia grow black raspberries.  They are a different species to the red (and yellow) raspberry, and the plant grows more like a blackberry than a red raspberry.  A black raspberry tastes very different to a red raspberry or a golden raspberry.  You likely will never see these in a market in Australia.

My black raspberries 

We have a few different garden strawberries as well as some different species of wild strawberries.  

My favourite garden strawberries are Cambridge Rival with its complex flavours, and the acid free Hokowase that is so sweet it can be eaten before turning red.

Garden strawberries
Wild strawberries are smaller than garden strawberries.  They tend to have stronger flavours and smell divine.  I grow a few varieties and several species.  

Wild strawberries tend to flower all year and fruit for most of the year, so berry season for them extends until the frosts.  This year the wild strawberries produced some really large berries, I don't know why.

Wild strawberries smell like a lolly shop


I do sell berry plants and dormant canes over winter.  I can post berry plants within Australia, but not to WA or Tasmania.  If you are interested they will be listed on my for sale page

Thursday 24 November 2022

Litchi tomato Solanum sisymbriifolium

A generous friend sent me some seeds of litchi tomato (Solanum sisymbriifolium) a while ago.  I had never eaten, grown, or even seen this species before so this was something new to me.  

Litchi tomato is also called Morelle de Balbis, vila-vila, sticky nightshade, red buffalo-bur, or fire-and-ice plant.  My kids call these 'prickle tomatoes'.

Litchi tomato Australia
Litchi tomatoes - can you see why my kids call them prickle tomatoes?

Litchi tomatoes are somewhat related to tomatoes, tomatillos, and ground cherries.  Like many of the vegetables we grow, they are a perennial that is treated as an annual.  

I left my plants where they were over winter, fully expecting frosts to kill them.  To my surprise they handled mild winter with frosts down to about -4C with minimal damage.  I have no idea if they would survive a cold winter, but a mild winter didn't seem to bother them too much.

They flowered through winter but didn't set fruit in the cooker weather.  I transplanted them in spring and with warmer weather they started fruiting pretty quick.

Litchi tomatoes flowering

The leaves look deceptively soft and velvety, but have prickles on them.  The stems and fruit husks also have prickles.  The leaf shape varies a little from plant to plant, some have deeper divisions in the leaf while others are not as deep.


Litchi tomato leaf

Leaves look soft, but have prickles

I am told that they need more than one plant in order to set fruit.  I don't have heaps of space to use so I plant several plants in the one hole.  This ensures a pollinator is never far away.

I probably get less fruit per plant by having them this close, but it frees up space to grow other things so I am happy with the result.

I grow several plants in the same hole
Litchi tomato stems are prickly

Litchi tomatoes produce reasonably large, showy flowers that were white or bluish.  They varied from plant to plant but were always rather ornamental and showy.

Litchi tomato flower
Prickle tomato flowers
Flowers vary slightly from plant to plant

Fruit are born on a small truss with up to a dozen red fruits per truss.  I found they took a while to flower, then the wait from flower to ripe fruit felt like it took some time, once they started to ripen they were nicely productive.

Fruit can be harvested once the husk starts to turn brown.  Either individual fruits can be picked, or the entire truss can be snipped off and brought in.

I am told that ripe fruit slips out of the husk, but didn't experience that even once.  I assume different strains act differently, and this one does not slip from the husk.  

I was able to harvest carefully bare handed, but think using gloves would make harvest a lot faster and easier.

Litchi tomato truss

Unlike many other fruits, I found that picking them when fully ripe made them taste bland.  They were sweetest earlier, and got progressively less sweet and lost complexity of flavour the longer I left them.  

Their taste varied from plant to plant, as well as varying as the fruit ripened.  Some tasted a bit like cherry, some a bit fruity.  Some tasted like kiwi fruit mixed with something nice, I liked those ones the best.

Ripe Litchi Tomatoes

The fruit were glossy red on the outside, orange on the inside, and had a lot of small hard seeds in them.  

I didn't mind the seeds at all as I didn't really notice them, but my wife disliked them and found them annoying.

Litchi tomato fruit with seeds

I don't tend to grow many things with thorns and prickles.  Unfortunately Litchi Tomatoes have a lot of prickles on pretty much all parts.  

If you ever grow Litchi tomatoes be sure to stake or cage them to prevent them sprawling, and try not to grow them anywhere that you will be brushing past.

Litchi tomato thorns
Litchi tomato - so thorny

I am glad I got to grow these, and I am growing the overwintered plants again this summer.  I really like the taste, plus the plants are intriguing and ornamental, so will likely grow them most years.  

I don't have endless space, and there are a lot of things I want to grow, so going forward may have them on rotation and grow them every second year.

I do sell seeds of Litchi tomatoes, as well as a few other interesting edibles and perennial vegetables in Australia through my for sale page.