What’s in a trend? In the case of topiaries, it seems to be a mixture of their classical look, the lure of indoor gardening in winter, and increasingly refined taste in plants. Plus a pinch of Disney.

Question: We have a tall evergreen in our yard. I think it's a juniper. How do we prune it to make it a nice spiral shape? We have some other evergreens that have been pruned into squares, but they ...