Early questions about winterizing perennials
I live in zone 5/6 Utah and have a couple of plants that I do not know what to do with come winter.
The questions I have are the following:
1- Do I need to trim them back, if so when?
2- Which plants do I want to leave alone?
3- Do they require any other special attention?
I have the following plants:
ES Hydrangea (amazing plant, just won't stop blooming)
May night Salvia
Peony (very important that I know what to do for that one)
Liatris (can the bulbs stay in the ground?)
Sorry that is quite a few. Any advice would be welcome.