In article , JennyC
writes

"Anne Hedden" wrote in message
m...
Looking for very small, very light plants, nothing over 1 inch in height or
width at maturity, or very light mosses. Any and all suggestions very
welcome. Beauty is important but not necessary. Must be able to grow these
plants hydroponically in styrofoam.

Sounds like you need to get in touch with NASA :~)

If anyone knows of an online source that arranges plant life by height and
weight (accurately speaking, most sites are very, very wide ranging in what
they consider to be a 'small plant'), I would be incredibly grateful. Are
there any e-Businesses that specialize in wee, teeny plants?

There are very few plants that will fit your bill. Moss seems to me to be the
only possibility:

Mind your own business (Soleriola) definitely. Possibly mentha
requienii. Although both those, like moss, have the capacity to spread
infinitely sideways.

I'd have thought there'd be lots - a plant which only grows an inch in
height is doing that because it hasn't competition for light, and so it
is likely to be growing in pretty poor conditions with minimal soil
depth.

But then, they're going to spread sideways as the most likely route to
success.

Alpines and rock plants would be the best place to start the search. And
there are a few very, very tiny cacti, but the mind boggles at growing
them hydroponically.
--
Kay Easton

Edward's earthworm page:
http://www.scarboro.demon.co.uk/edward/index.htm