hydrophyte

it is my experience that pontederifolia is very slow to establish and recover from transplanting, but once it does it has good growth. next time i mess with mine i will definately use some organic matter in the mix.

do you have any pictures of your undulata? i have some that i think is undulata, but i'm not sure. it is one of my hardiest crypts and grows as fast as wendtii, but doesn't produce as many offsets.

i fertilize my crypts in an irregular, haphazard way, always erring on the side of dilute solutions. they all seem to do fine with this regime.

andrew__

So I don't know how much can be attributed to the substrate vs the fertilizer that gets rarely added these days but my c. pontederiifolia is doing much better and currently has a fourth leaf growing with no sign of decline on even the oldest leaf. My C. undulata has sent out a runner and generally is doing well (and is my largest emersed crypt). All of my C. wendtii cultivars have for some reason changed to a smaller leaf form possibly due to a drop in humidity. I am going to try to take pictures of a few of the plants later today.