Hi Carl,
After a little more intensive searching, I found some interesting tidbits here:
http://www.ruthbancroftgarden.org/pages/plants/california-buckeye.html . Not bonsai related but interesting none the less. But I’m not too sure I want a tree that kills bees…
Horse chestnut? That sounds interesting. Is that the type of chestnut tree that makes the spiky green globes that sort of look like ship mines? Those things are hazardous!
-Cody