Adiantum See All Search Site
Taxon Family
Origin of Taxon
China (Guangxi, Guizhou, Hubei, Sichuan)
Growth Habit
Clumping, Rhizomatous

Adiantum mariesii is an extremely rare, micro fern species, which grows on wet rocks in China. It should not be confused with the more common and much larger Adiantum x mairisii, which is spelled differently and is a hybrid, not a pure species.

It’s hard to see but the new fronds have a lovely yellow green color with a tinge of pink.

This one is tucked in a crevice in a rock. I’m not sure what kind of rock it is, but it seems soft, somewhat like sandstone. I doubt that the type of rock matters.

Inside the crevice is a bit of sand, perlite, and some shredded sphagnum to hold the plant in place and keep it from drying out too fast. I didn’t record the substrate mixture details, but if I had to guess, I’d say it’s ⅓ sand, ⅓ perlite, ⅓ shredded sphagnum.

The plant appears to do better when grown on the wet side, as opposed to just moist. Since increasing water and moisture, it has begun putting out a lot more foliage.

The humidity should be very high, to prevent the delicate foliage from drying out.

The tank in which I’m growing this has a couple of small PC fans to move the air around. I don’t know if that has played a part in my success with this species, but I have a feeling it probably does. The reason I think so is because this fern grows on cliffs in its natural habitat, and cliffs generally have good air flow.

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