well... "mommy kissed dadddy, and the angel told the stork, and the stork came down from heaven and hid a diamond under a leaf in the cabbage patch... and the diamond turned into a baby." "our parents are having a baby, too." "they had sex." sorry. (yes, i'm a member of the addams family.) but seriously, the solid growth (tm) thingy is a sort of shape-generation algorithm that produces a random number and shape of branches/leaves, and assigns them a default material. extra vegetations can be created (e-on sells extra veg's at their site), but only, i believe, in-house. you can change the materials of the vegetations to get new variants, new speciea, etc. check especially guitta's site, and varians, for alternate plant materials. you can also re-scale the vegetations (see the recent posts about cherry trees/oak trees.) and stack them (see varian's tutorial about building complex trees) to build upon the stuff that comes with vue. er, guitta and varian will be by shortly to post their urls for ya....