Apropos tress etc.:
I have planned Spring and Post Apocaliptic sceneries, but for far future probably.
I actually found some of those you said: spring and empty trees, so I think there will be some available in SR soon.
As for fruits, I found a mango tree but those mangos had a lot of triangles, so I removed them. I don't think we can afford fruits or other high poly stuff on trees. At least not with old Ogre.
I found some huge cypress tree. I think I'll manage to create few of them and put in SR. Those are usually too high poly to have. I'd be ok with few trees of 30k triangles (normally 7k is high already), but over 100k for one tree that's impossible. Usually leaves make it so high, too small. Man I wish a 3d artist or even a botanist joined.