When it grows. I've just recently had a 90 FULL of the stuff, but I
went through several false starts with it. I suspect the java moss I
previously got from my LFS was dead just still green.

BTW, I think folks sometimes confuse Java Moss and Java Fern in terms
of rate of growth. It's been my experience that Java Fern is a pretty
slow grower.

Richard Sexton wrote:
It's virtually unkillable.