Trampoline ferns

Last spring or summer I found a tiny baby fern growing under the trampoline.  There was only one growing there, I looked carefully to see if there were any other tiny ferns or prothalli, but there were none to be seen. 

It gets dry under the trampoline over summer, it gets icy over winter, and I didn't want it to die, so I dug it up and planted it in a pot.  I put this in my greenhouse.  I am told it is difficult to dig up ferns from the wild to transplant them, but I have always had great success with them.  This wasn't really growing 'in the wild', it was growing under my trampoline.  I am more careful than most people, and have a reasonable understanding of the fern's preferred growing conditions, so that probably helps with my success rates.  

The baby fern grew well, and survived winter with no visible damage.  It started to reach a nice little size, and I was excited to see how it grew once the warmer weather began.  Then, one night in spring, rats or mice came into my greenhouse from the paddock next to us and ate the fern to a stump.  

We have mice and sometimes rats come in from the paddock several times per year, often when the seasons change.  I put out bait to control the rats or mice, the bait was taken every night as soon as I put it out.  

The fern started to recover and then was eaten to a stump again.  Sadly, it died after being eaten to the ground the second time.  Not long after that I got on top of the rodent problem.  I wish I protected it better.  

trampoline fern looking healthy

Growing in part shade in the greenhouse

baby fern after I had grown it for a while

This past summer I noticed another fern growing under the trampoline in much the same position as the one I dug up earlier.  I looked carefully and noticed what may be prothalli, or perhaps liverworts.  I then started to water this area to help the ferns survive.  

This summer has been dry, so the ferns needed a lot of watering.  One trampoline fern is getting reasonably  large, another one is smaller, and there appear to be two other tiny ones.

The larger trampoline fern

Second largest trampoline fern

I don't know what type of ferns these are, and am not sure if they will survive winter under the trampoline as it gets a little frosty here.  

I would dig up one and put it in a pot in my greenhouse, but worry that it may be eaten to death in spring when the mouse numbers increase.  Perhaps it is best if I don't intervene (other than to water them, and to reduce competition by removing weeds and grass from time to time).

Hopefully at least one of these survives long term.  When they get larger I may be able to identify them, but for now they are mystery ferns. 

All the ferns are in this photo, some are too small to be seen

Trampoline fern and weeds

I'm not sure where these ferns came from.  A while ago I brought home a fertile frond from a tree fern but never got around to planting the spores, perhaps these ferns grew from spores that came from that frond.  Perhaps someone nearby has an exotic fern that shed spores to the wind.  Perhaps this is a native fern whose mother is growing near the stream down the road.  I don't know, all I know is that this is the only spot in my yard that is growing ferns.  

I look forward to this getting larger and possibly being able to identify it one day.  I don't really care what type of fern it is, I am happy for it to be growing in my yard. 

If I can keep a self-sustaining population of these ferns under my trampoline that would be nice.  It would be nice if they spread under the trampoline and competed with the grass and weeds that grow there.  If that isn't possible, I would like to grow some in pots.  

For now I will leave them, and water them, and see wat happens.  I would hate to dig up another, only to have it eaten to death by mice or rats.  

I like ferns, and I like plants that appear out of nowhere, these little plants tick both of those boxes.  

Maidenhair Ferns after winter

I grow a few maidenhair ferns.  They are easy enough to grow if you get the conditions right.  Earlier I wrote a blog post on how I grow maidenhair ferns.  

My oldest maidenhair fern has been with me since 2016, over these past 8 years it has grown from a tiny cute little fern into something rather large and impressive.  This used to live full time in my office, but I brought it home a few years ago and it lives at home.  When I had this in the office with me I would remove dead fronds regularly, and it always looked lush and healthy.  

Since bringing my fern home permanently I have not removed the dead growth regularly enough.  It is healthy, but it isn't looking great.  

Over winter it got a lot of dead fronds, I left them on the plant to help protect it over winter as it lives outside.  Although it is under shelter it can get frozen during very cold spells, it also gets blasted with wind where I have it located.  Now the warmer weather is here, my maidenhair fern needs to be refreshed.  

After winter lots of dead fronds

In the old days people would suggest when maiden hair ferns start looking ratty to cover them with a brown paper bag, tie it loosely with string, and set the paper bag on fire.  

This would usually burn at a low enough temperature that the plant would not die.  Once the fronds were burned the fern would send up a flush of new growth and look fresh and reinvigorated.  

It has since been proven that burning does nothing other than removing the dead growth.  I have been told by some fern growers (who know a lot more about ferns than I do) that simply cutting off the top growth achieves the same result and is less risky.  Sounds good to me so I decided to give it a go.  

Maiden hair fern not looking great after winter

Each winter my fern looks a little ratty, and each spring I consider cutting it to the ground and letting it regrow.  Each year I don't do that.  Normally I just remove the dead fronds one by one.  

This year I decided to cut off all its top growth, I planned on removing every last frond.  

Then I noticed how may healthy fronds it had, and decided to only remove the dead fronds.  The dead fronds were clumped mainly in the middle, so cutting them off was quick and easy.  I also took out lots of the healthy green fronds while doing this, but that shouldn't be a problem.  

As you can see, I left a lot of green fronds.  Even with all the fronds, from the front or the back it looks a bit sparse.  

Looks sparse after removing dead fronds

I kept some fronds

When you look from above you can see just how much was removed.  

I kept the healthy fronds so the plant can capture lots of sunlight.  Perhaps I should have also removed these fronds and started anew, but I couldn't bring myself to do that.  Perhaps next spring if I am still here I will try to remove all the top growth, or perhaps I will chicken out again and try to leave most of the green fronds.  

Look how much was removed

Not much left, but it should regrow fast

Removing the dead fronds means they have less protection from the wind, and there will be higher evaporation from the soil.  The dead fronds would have acted as insulation, without them the temperature will rise and fall faster.  

Removing the dead fronds also means the plant can get more light, and have better air flow.  So hopefully they will regrow stronger and healthier.  Regardless, it should look nice once it grows some more fronds.  

Top: tiger fern and variegated maidenhair ferns. Lower: maidenhair ferns

This went well enough, and once you start something it is easy enough to continue.  All of my ferns look a bit tired after winter.  I tried to remove dead growth from all of them, some I was a lot more harsh than others.  As you can see above, they all look ok.  

If I remember, I will try to take some photos of my ferns once they have recovered from being cut back.  All of my ferns look healthy, and I have little doubt that they will start to grow fast now the warmer weather is here.  

Some of my ferns, cut back and ready for spring growth

  You can see a few of my different maidenhair fern varieties in the pictures above.  I have a few other varieties that are not in this picture.  There are a lot of varieties of maidenhair fern around, I grow a few and am still tracking down some others.  

As you can tell, I like maidenhair ferns.  They look pretty, they can live virtually forever, and they are reasonably simple to grow.  If you have somewhere out of direct sun, perhaps you should grow some of these ferns.  

Vegetable fern Diplazium esculentum

For a few years I have wanted to grow vegetable fern (Diplazium esculentum).  This is a beautiful and ornamental looking fern that is commonly eaten as a vegetable though the warmer and wetter parts of Asia.  

Small vegetable fern - Diplazium esculentum

There are a few ferns that are commonly eaten, some are meant to be easier to grow than others.  I am told that vegetable fern spreads rapidly and is easy to grow.  It prefers some shade, it likes heat, and like most ferns it needs decent moisture to thrive.  

I am told the fronds of this species are highly nutritious, and has a host of medicinal properties.  All of the research into vegetable fern indicates that it is highly nutritious.  

One study demonstrated  that its fronds were high in protein (52.3%), carbohydrates (28.2%), Vitamin C, antioxidants, minerals (including calcium and iron), and dietary fibre (17.44%).  That study also stated it contains 324 Kcal 100 grams.  

Vegetable fern thrives in part shade

There are a few edible ferns should only be eaten in smaller amounts due to mild toxins.  Vegetable fern is unique in that it has not been recorded to have any negative effects when eaten.  

Some edible ferns (such as bracken) contain a substance called Ptaquiloside.  This compound is water-soluble and rather unstable, I have read that scientists were able to isolate this and test it on rats and ferrets who went on to develop tumors.  From everything I have read, vegetable fern does not contain this compound and is completely safe to eat.  

Not only is vegetable fern meant to be completely safe to consume, and highly nutritious, it is also highly ornamental.  It is a good looking fern.  Some fronds almost shimmer silver in the right light, I haven't seen a fern do this before.  

Most vegetables will be unproductive in shade, whereas this plant needs shade to be productive.  It also is rarely eaten in Australia, meaning if hard times hit people would not think to steal this if they raid gardens for food.  

I can't capture the silver shimmery fronds

While it doesn't matter to anyone unless they are intending to do any breeding with this plant (ferns are difficult to breed with and not something I have been able to achieve), the vegetable fern is diploid with 2n= 82.  

Vegetable fern spreads quickly through rhizomes, and I am told that it produces readily from spores.  Growing ferns from spores can be fun, the ease that this fern reputedly grows from spores means it could pop up in damp places by itself.  

I like plants that do this.  It is killed by frosts, and does not love full sun and dry areas, so I can't imagine it posing a weed issue where I live.

Vegetable fern stating to divide

My vegetable fern has grown since these photos, and has divided a little.  We have had a few cooler nights and it is showing that it does not cope with frosts.  I now have it in a sheltered spot where I think it will survive the winter.  

Hopefully in spring it will be large enough and healthy enough to grow and divide and maybe even produce some spore.  If all goes well I should be able to start eating this in spring/summer and hopefully have enough plants to be able to share them around a little.

Maidenhair fern comparison of varieties

I grow a few different maidenhair ferns, they are lovely ferns and I really like them.  Each type that I grow are noticeably different.  

I sell a few maidenhair ferns each year, and hope they the buyer looks after them.  Sadly, most people think of maidenhair ferns (or any potted plants) like a bunch of flowers: they look great when they buy it and they expect to throw it away after a time.  I am happy to say that these ferns will live for decades if cared for.  

Maidenhair ferns are relatively simple to grow.  I don't mist them or have them under grow lights or make any attempt to control humidity or have a terrarium or anything like that.  I grow some outside under shelter, some in my unheated greenhouse, and some on the bookshelf in the house.  I wrote a previous blog post describing how I grow maidenhair ferns.  

I really like my maiden hair ferns so thought I would make a blog post showing a comparison of the different types I currently grow.  Please note I am not a fern collector, there are many more varieties (as many other species) of maidenhair that exist.  

Variegated maidenhair pinnules are each unique 

Office fern: Adiantum raddianum.  Originally from South America, these are commonly sold in garden shops.  I call it my office fern because it lived on the deak at my office for the first four years that I had it.  People often complain that they had one but killed it because they treated it like a cactus instead of a fern.  It grows long, arching, delicate looking fronds on surprisingly thin black stems.  This fern can get rather dense and vibrant if looked after.  I have had the fern below for almost eight years and it is thriving.  The largest fronds usually reach a little over 50cm long, which is about as big as this one will grow in a pot this size.  

Maidenhair fern - almost eight years old

Chunky maidenhair: probably Adiantum raddianum, but I am not certain.  I was told this is 'Lady Moxon', after growing it for a few years I am pretty sure that it is not Lady Moxon.  It is quite different to my office fern and produces chunky and compact fronds.  The fronds are slightly contorted and twisted, and the pinnules are clumped much closer together than they typical maidenhair ferns.  The stem of each frond is much thicker than normal maidenhair ferns.  I have not grown this as many years as my office fern so it is not as large, and I don't yet know how large it can become.  While it is staying comparatively compact, it seems to be getting longer and chunkier fronds each year.  When I first got this, due to its shape it almost looked similar to a bonsai tree.  

Chunky maidenhair fern

Chunky maidenhair fern

Chunky maidenhair frond

Variegated maidenhair vs chunky 

Variegated maidenhair fern: Adiantum raddianum 'Variegata'.  The elusive and rare variegated maidenhair fern.  Fronds are green splashed with white and produced on thin black stems.  I think there are a few versions of this, but on mine the fronds tend to divide towards the tips.  This is never as large as my office fern, the largest fronds reaching about 40cm long.  My photos never do justice to this incredible fern, it is a delightful and graceful and captivates with its delicate fronds and striking variegation.  

Variegated Maidenhair Fern

Variegated maidenhair frond 

Native maidenhair fern: this is one of Australia's 8 native species, most likely Adiantum aethiopicum but it could be Adiantum capillus-veneris, I really need a fern expert to positively identify it for me one day.  This species is native to Australia, and native to my location.  The pinnules are a different shape to my office fern, and the sporangium are also a different shape.  It is hardier, and survives light frosts and drying out much better than the South American A raddianum.  This sends out runners under the soil, and survives a far wider range of conditions.  This species never gets as dense and full looking as the South American species.  

Australian native maidenhair fern

This is by no means an exhaustive list of maidenhair fern varieties, it is just the varieties I am currently growing.  There are a few other varieties I would like to get some day, but that may or may not ever happen.

I do sell maidenhair ferns from time to time.  When I have a few for sale I list them on my for sale page.  That page has my contact details, so if you are after one of my ferns send me an email and I will let you know if I have any for sale.  If you have any interesting varieties of maidenhair fern let me know, I would love to learn more.  

Variegated maidenhair fern update

I wrote a post a while ago on my variegated maidenhair fern.  I mentioned how I didn't look after it properly and it died back to a single frond, and how at that stage it was starting to regain strength.  

I was worried because variegated maidenhair ferns are rare and incredibly difficult to find, so if I lost mine I probably would never be able to get another one.  Variegated maiden hair ferns are really lovely, so I would hate to lose mine.

It has been almost a year since my previous post, so I thought it may be time for an update.  As you can see, my variegated maidenhair fern (top right of the following two photos below) is doing well.

Variegated maidenhair top right

Variegated maidenhair fern almost a year ago top right

On a side note, you may notice in the photos above that my tiger fern (top left) is smaller in the more recent photo.  This is because I divided it.  I am planning on keeping this little division, and growing out the other larger ones for sale.  Tiger ferns are hardy and fast growing, it should not take too long for this little one to grow back to its original size.  Enough about tiger ferns, let's talk about maidenhair ferns.

I grow my variegated maidenhair fern outside where it is under cover and slightly sheltered.  I had it inside my house for some time but there was not enough light for it, which meant it declined badly.  Outside on my verandah this plant gets hit by strong winds, over winter it gets some light frost, and it gets too hot over summer, but my maidenhair ferns perform surprisingly well out there.  

Too many people complain that they have killed a maidenhair fern, they usually blame the fern and assume they are difficult to grow.  Maidenhair ferns are not what I would consider to be very hardy, but they are simple to grow.  I wrote a blog post on how I grow maidenhair ferns.  While I am not an expert, they grow well for me, and that post explains how I grow them.  

I have grown this variegated maidenhair fern for almost six years, and I also have a green maidenhair fern (bottom right of the photos above) that I have been growing for close to eight years.  While I am not an expert in ferns, the longevity of these plants show the way I grow them works well.  

Variegation is different on each of the pinnules

Maidenhair ferns don't like to dry out, but they are not swamp plants.  I use self watering pots that have a little reservoir of water.  This ensures they have constant access to water but are not overly wet.  

I am told that maidenhair ferns do well in hanging baskets.  The ones I have seen in hanging baskets look incredible.  I don't grow these ferns, or any plants, in hanging baskets because I can't work out how to do it.  I can't work out how to water them easily, I worry that the wind will knock them down, and I don't have anywhere sensible to hang them.  If you have success growing things in hanging baskets I think a variegated maidenhair fern would look incredible growing in one.  

Any variegated plant will be weaker than an all green one, variegated maidenhair ferns are no exception to this.  Direct sunlight scorches their fronds.  They also don't cope with total darkness, less chlorophyll means they are less efficient at photosynthesis.  

Chlorophyll allows plants to photosynthesize and also acts like sunscreen.  Being variegated means they will burn easily, and be less able to cope with lack of light.  I grow them in 'bright shade' where they get an hour or so of direct light at sunrise.  Too much direct sunlight tends to burn them, but a little direct sunlight in the morning seems to be fine.  

Variegated Maidenhair Fern

I mentioned in my previous post how I would normally rotate my fern each week to ensure it grew out evenly, at that stage my fern was still weak so I was not rotating it.  This was a good idea and it worked out well.

My fern had little energy and only one frond.  It grew new fronds and orientated them to catch the light in the most efficient way possible, and it regained strength.  The fern grew a bit lop sided, but that was ok.  

Once it was a little stronger and a bit more healthy I started to rotate the pot a little bit each week.  This helped the growth to even out a bit, and my fern continued to get stronger.  It was still lo[p sided, but was less uneven and getting healthier.  

When my variegated maiden hair fern got even larger I would rotate the pot 90 degrees each week.  As you can see from the photo below, my fern now has reasonably even growth on all sides.  This is what I wanted it to do.  

Not only does it have even growth on all sides, but my fern is now reasonably large and healthy.  

Variegated maidenhair fern with even growth

If you have followed my blog you will probably have noticed that I am not a photographer.  Regular maidenhair ferns are graceful, variegated maiden hair ferns are incredibly graceful and even more elegant, my photos do not do it justice.  

I also realise that the photos I take of the entire plant don't really show the variegation.  While I don't encourage people to touch the fronds of maidenhair ferns, you can see the variegation a little more easily when I do hold my hand underneath.   

New fronds start out green, with lighter green where the variegation will develop.  As the frond ages the variegated parts turn white.  On each frond some pinnules will be entirely green, some might be entirely white, and most will have some amount of green and white.  My fern hasn't produces any entirely green fronds.

Variegated fern

Variegation

Maidenhair variegation

One thing I notice is that this fern grows a little differently than my other maidenhair ferns.  I was told it was Adiantum raddianum 'Variegata' but to be honest I am not certain about the species.  I grow a few different species of maidenhair ferns.  Perhaps my variegated fern is a different species to my other maidenhair ferns, or perhaps it is the same species with different growth characteristics.  

It is not quite as large as my other ferns, and I don't think it ever will be.  The fronds of my variegated maidenhair fern often reach 40cm, occasionally some of them reach 50cm.  I have a feeling that this is as large as they will ever grow.  My other maidenhair ferns have fronds that regularly exceed 50cm.  I think some of my other maidenhair ferns have potential to row quite a bit larger but are restricted due to the size of their pots.

The fronds of my variegated maiden hair fern are often divided at the tip.  You can see this in the photo below.  Not every frond does this, but it appears that most of the larger mature fronds do.   

Variegated maidenhair fronds tend to be divided at the tip

It appears that my variegated maiden hair fern is doing well.  I am tempted to try and divide it.  

Dividing my fern will set it back considerably, and will mean that its growth is no longer even.  I am not overly keen on this because my variegated maidenhair looks so large and impressive at the moment.  

Variegated maidenhair fern

Dividing it would also mean that I will have two of them, which will help to ensure that I don't lose it if the pot gets knocked over by a possum or something.  Very few places sell variegated maidenhair ferns, and the few that do seem to be sold out for most of the year.  

Variegated fronds

Variegation is different on each pinnule

My photos really don't do them justice

I like maidenhair ferns, and I really like this variegated form.  I should try to grow some from spores and see how much genetic diversity they have.  

I sell some maidenhair ferns through my for sale page, and if I ever have any variegated ones spare I will probably offer them for sale through there too.  

Unless I grow a lot from spores, or have success with growing them using tissue culture, it is unlikely that I will ever be able to offer many for sale, but it is worth keeping an eye on my for sale page if you are interested in them.  

Variegated maidenhair fern update

A few years ago I bought a variegated maidenhair fern (Adiantum raddianum 'Variegata') and wrote a blog post about it.  

My variegated maidenhair fern did poorly.  I had it in a self-watering pot that was not designed well.  I normally grow maidenhair ferns in self watering pots and they usually work well, but this one functioned more like a pot without a drainage hole.  My fern went down hill badly until I repotted it and changed some of the soil.

My fern grew ok from here, getting larger and stronger.  The fern reached a rather large size and had long graceful variegated green and white fronds.

Then I had to move it to a different spot.  Maidenhair ferns do not handle direct sunlight, it burns them.  Variegated maidenhair ferns are even less able to tolerate direct sunlight.  Maidenhair ferns don't cope with no light, variegated ones even less so.  

Variegated maidenhair ferns can be a bit precious, but they are worth the effort.  

Variegated maidenhair fern fronds

Maidenhair ferns need bright shade, they thrive with a little direct sunlight early in the morning.  Contrary to what you have been told, maidenhair ferns do not cope with low light.  If the light is too low they slowly die.  

This fern is so beautiful that I really want it growing inside the house where I can see it.  Unfortunately, my variegated maidenhair fern did not get enough light in the spot I chose for it.  It declined again.  I tried moving it a little closer to the light, where it struggled to survive.  After some time of declining it only had one single frond!

I have a sheltered spot outside where I grow some maidenhair ferns and other delicate plants.  It is perfect for them.  They get a little direct sun at sunrise, then bright shade for the rest of the day.  

I don't want my variegated maidenhair fern to die, so I moved it outside.  I won't see it as much out there, but I sit out there on warm days and drink coffee so will still get to see it.  

Some of my ferns

Maidenhair ferns can bounce back quickly if they have enough stored energy, but my little fern had depleted its energy over a long time inside the house where it did not get enough bright light, so I was not sure if it could survive.

The fern immediately started producing new tiny fronds.  This filled me with hope that my fern would survive.  These new fronds were almost immediately eaten by slugs or snails.  

My fern still only had the one frond, only now it had used some of its stored energy to produce more fronds that had been eaten.  To make matters worse, the remaining frond was being damaged by the wind.  

This was not good.

Variegated maidenhair fern

I don't use much snail poison, I don't tend to use it ever, but figured this was probably the one time that I should use it.  I bought one that is iron based, and put a little on the soil near my variegated maiden hair fern.  

Apparently this iron based snail bait kills slugs and snails then breaks down and does not leave toxic residues.  The ferns are up on the deck so the chances of a bluetongue lizard eating it (or a snail getting down to them after injesting it) is low.  I am still not keen on using poison, so I only used a tiny bit.

I don't like using poisons, but there is a time and a place for them.  I don't want to lose my fern.  It took years to track one down and it was not cheap.  If this one died I may never find another.

The plant is uneven for now while it builds strength

Slowly, this plant produced more fronds.  At first they were tiny.  Some were damaged by wind or heat, but none were touched by slugs and snails.  

Over time my variegated maidenhair fern produced more fronds.  At first they were very small fronds, then the next ones were slightly larger, and the next ones larger again.  This is all a good sign.

Variegated Maidenhair fern

The variegated maidenhair fern is now reasonable sized and starting to look healthy.  

The fronds are about half as long as they used to be, but they are getting larger as the plant gets stronger.  The plant also has a decent number of fronds now, and looks healthy enough to bounce back if it gets damaged.

Young fronds of maidenhair ferns are light green, and the variegation can be difficult to notice.  As the frond ages it turns darker green, and the white variegation really stands out.  

I have heard that some variegated maidenhair ferns have some non-variegated fronds, but so far mine has not done this.  All of the fronds have at least some variegation.

Normally I would rotate the pot a quarter turn each week so the growth is more even.  As my little fern had such little energy I decided not to do this yet.  I decided to let it orientate its fronds to collect as much light as they could and allow the plant to become stronger.  

Once my fern is a little stronger I will probably start to rotate it each week and slowly even out the growth.  

Variegated maidenhair fern growing stronger 

There appear to be a few plants in the pot.  In spring if things are still going well I may attempt to divide this so I have a few of them.  If it doesn't look strong enough, I will give it another year or so before trying to divide it.  

For now though I plan to allow the plant to do whatever it needs to do so it can gain back its strength.

Variegated maiden hair fern - new fronds

You probably have also noticed that I left the old dead fronds on the plant.  Normally I would try to remove them so the plant looks nicer.  

My variegated maidenhair fern was very weak, and it is growing outside where it gets hot wind in summer and cold winds over winter.  I figured the dead fronds would help to insulate it a little, slightly reduce water loss, and help to block the wind ever so slightly.  For these reasons I have left them on for now. 

I will probably leave it like this with the dead fronds until spring.  If everything is still going well in spring I will remove the dead fronds.  

Fronds divide a little at the tips

Variegated fronds

I like maidenhair ferns, and I think the variegated form is beautiful.  I am glad my maidenhair fern has survived.