SemiHydrophonics is a trademarked potting method. See Firstrays.com or
GOOGLE S/H or Semihydrophonics for full details. Also see the
rec.gardens.orchids thread "S/H Repotting" and others.
Joe Tillery
Houston

PS to new users, which I am one, you can usually find definitions of
obscure slang used here by searching rec.gardens.roses.

Note; If I didn't get all that correct, tough. ;-))