Well, first of all, beachfan, welcome to the DIS, nice to see you here. Hope you drop by often.
A great place to see topiaries is on the walk from out back of the Contemporary Resort, on over to the Magic Kingdom. There are a lot there. Then, certainly the very best, is at Epcot during the Flower and Garden Show, this year, April 25 June 8. It is great. Here are a few links.