Isopod Plant Questions!

[Elk]

I’m still fairly new to isopod keeping, and my colony has been doing good so far (Powder Blues) but feel free to drop any random tips and tricks if you’ve got any, i love these pretty guys.

I wanted to add some live plants, as they only really have a piece of driftwood, 2 cork wood, and a little spider wood piece to climb on and hide around. 

I found some small plants in the terrarium section, called 

Ruffles Fern (nephrolepis exaltata)

Rabbits Foot Fern (Davallia Fejeensis)

Does anyone know if these are safe for my pods? Thanks

 

[Dynastes]

Ferns are probably good. Liverworts like Monosolenium tenerum (it grows in terrestrial env.) also do well without being eaten.