The PBS kids show was a puppet show. It was this monster kind of girl who had purple hair and, it think, a yellow-orange.

The disney show had a real person in it, but the rest was puppets. It was something about a tree

What are the names of these shows?

Eureeka's castle?

Shining Time Station?

No. The PBS show was on in the early 2000s. The Disney one was on in the early 90s (around Adventures in Wonderland).

I think the pbs one might be Wimzie's House. I'm not sure about the disney one though