gregb

Serissa was never on my list of species to try for bonsai, then a friend gave me one as payment for dog-sitting. That was Dec. 2000 and I still have the tree and several of its suckers and cuttings from it. It lives outdoors most of the year, except when there's threat of frost. I accidentally left it outside last winter and the temperature went down to 22*; didn't even phase it.

It seems to me the problems that plague your tree are greenhouse based. It's summer now, try acclimating it to a semi shady spot outdoors; a place that gets a few hours of morning sun (east-facing) and shade in the afternoon. I also think you should be fertilizing full-strength according to the label of the brand of fertilizer you're using. The half-strength school of thought won't "get 'er done" as they say. It's worth a try since you say you now have several trees, try it with a cutting to start and see if there's any difference. Good luck!