this post was submitted on 21 Jun 2025
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Solarpunk Farming

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I have most of my plants in hydro, but especially my carnivorous plants need (Sphagnum) moss to grow.

It, and peat, just has the right, unique properties to ensure the CPs thrive that cannot be replaced by other substrates.

Sphagnum in particular can for example replace minerals and turn them into acid, creating a mineral-free, highly acidic environment many bog plants have evolved to live in.
Sadly, both sphagnum and peat are mined extremely destructively, which is why I wanna grow it myself.

But I also find all kinds of mosses just beautiful and they make a great top dressing, for example for my Pinguicula. I do not only grow Sphagnum sp., but also Hypnum sp. and many other different kinds I can't identify myself. But they look cute tho 😇

(I shot the pics in the forest)

Here's a Drosera, a peat bog plant, that I tried to grow in LECA alone. It didn't even take a month and it was dead. The ones in peat thrive tho.

(I added the live sphagnum a week ago in hopes it will revive it)


Here's my process:

I take a transparent box and add a few centimeters of LECA, which has been soaked thoroughly, because mosses are pretty sensitive to leftover minerals.

Then, I add distilled water just right below the surface. It is always kept wet by capillary action, while the moss sits above and gets hydrated.

The moss is plucked apart or cut with a pair of scissors. Every tiny leaf will grow to the original form it came from.

Then, the box is placed in a bright spot. Just make sure it isn't too hot, like it happened in my parents' greenhouse :(

Before:

After a too hot day (it was steamingly hot):

(Forest stew, yummy!)

If you grow it indoors, a sunny spot behind a curtain is great.

I will soon lightly spray fertilize it when I see good new growth, but be careful, it's very sensitive to too much salts.

I just started this project about one week ago, and I can give you an update in a few months if you're interested :)

I got the samples from nearby. The sphagnum is from a neighbour hobbyist with a bog garden, and the other mosses from forests in my surroundings. Make sure you respect your local wildlife when collecting.

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[–] [email protected] 4 points 1 week ago

Very cool process and tutorial! Gould the third picture from above be Atrichum undulatum? Would be quite common in forests...

[–] [email protected] 3 points 1 week ago

This is an amazing setup!! Somewhat unrelated, but since you've got pinguiculas, would you consider trying to make tätmjölk?

[–] [email protected] 2 points 1 week ago (1 children)

Also, consider replacing LECA with perlite, it's much lower in ions, it seems, especially slow leaching ones.

[–] [email protected] 3 points 1 week ago

I've never had any problems with LECA, neither pH drifts nor ion leaching.

I use it for about 100 houseplants and my whole balcony, and I routinely check my EC and pH. Never noticed anything.

Still, thanks for the information! :)

[–] [email protected] 1 points 1 week ago

Cool setup! We also grow moss and carnivores!

I collect moss from my forest (it has lots of moss growing and a couple handfuls here and there are totally negligible and regrow in no time), stuff them into yogurt 1L buckets and mostly use for rooting of other plants (can't resist to advertise the rooting gel I use, sorry, because I am also its manufacturer: https://store.zymologia.fi/hormones/35-rooting-gel-50ml-1-x-container-for-dipping-cuttings.html). Naturally, constantly watered and dimly lit, as is perfect for rooting plants, moss just keeps growing. I keep collecting more, but I think quite soon this will become self-sufficient process. In an abundant situation like mine (except for long winter time) it's not a big deal, and your setup with moist rocks must be much more efficient.