Can I do boolean operations on a bryce treelab tree?

I'de like to make a bryce tree lab tree then shape it perfectly spherical by cutting back all outer branchs with a sphere. I'm not getting any results when I group a postive sphere and a intersect treelab tree the sphere and tree both stay visable, not the intersection I was trying for. I also tried it the other way to, with the sphere set to intersect and tree positive. Any suggestions. Thanks

Bryce trees are actually metaballs, and currently metaballs can't be booleaned.  I'm not sure if there is another way to do what you want, unfortunately.

You might try creating a sphere then texturing it with foliage. Then you could add some branches if needed.

There used to be a tree kit freebie with several different trunk and tree meshes that you could mix and match.  I think one of the tree shapes was sphereical.  Unfortunately I can't find the website, but I think it was by the same person who had the extra primitives (star shapes, rounded cylinders etc.) and possibly also the torus-shell tutorial and the pyramid-diamond tutorial, if that helps anyone else find it.

Edit: Never mind about the tutorials, they're both peter sharpe's.  Thought I'd seen them both somewhere else first, though, especially the diamond one, with a lot more math.

Thanks all
For the info and suggestions. I'll  try to remember to post back here when I reach a solution.

You could try making a tree with transparent leaves, then sticking a sphere with leaf textures on top.