At work I have the option of taking any pot, container, form or whatever and planting it however I wish. A couple of days ago I decided to plant a living wreath. I had planned on doing this for a sunny location but then a customer called and wanted one planted for the shade. Luckily she called just in time because this was my last wreath form.This form came with a liner that I'm not a big fan of. It's made of some type of material cut in a circular form. I prefer the ones that come with pre-molded sphagnum moss which has a nicer effect and are easier to work with.
These are kind of a pain to do but they look so nice when done. In this one I planted pink and coral colored impatiens, variegated plectranthus, ivy, asparagus fern(sorry I don't remember the type) and torenia.
I have done them using different sedums too. Those with sedum work a little better since you don't have to water them as often.