Amazing! I love seeing your spring pictures! I do have a question though, if you don't mind. When the program says that they are frost Hardy to -5, that means they will die if winters get much colder than that, right? It's not the point that they go into hibernation? (I know, dumb question...)
Your right if it goes below - 5 you've got a good chance the plant will die but if the plant is sheltered under trees or other plants near a wall/fence, mulched you've got a good chance it will survive these are in a sheltered spot under a pine tree in a border with Rhododendron @happy-orc
@happy-orc Do you know what growing zone you're in? If not, what city do you live near? Some of hellebores that grow in the UK won't make it in Canadian winters unless you live in the greater Toronto or niagara area. There are a couple that are zone 3 and zone 4 and those will make it here.
@carolgs , @gjones thanks for all your advice and help. I have no idea what zone I live in, but it's a cold one! It's Montreal. It's a frozen wasteland here right now. I'm pretty sure I can't raise these guys unless I take them inside for the winter.
If you live north of Montreal you'd be in zone 3b (same as us). If you live in or south of Montreal you'd be zone 4b to 5a. It means you have to choose outside plants that will survive in -28 to - 35 weather (depending which zone you're in). If you are interested in hellebores, the Niger variety is good to zone 3. Right now we're about -9c and have about 10