I'm a hydrangea newbie who just bought a CityLine Paris and CityLine Venice on clearance. The tag says they're hardy in my zone 6, but I've read online they're really only marginal here. I do get a 2 year guarantee *whew.*
Anyone have a few years' experience with these things in northern zones? Will they need special attention for overwintering?
Also, when do I prune? I know they're compact and shouldn't require much pruning, but the ones I bought are a tad misshapen and will need tidying up. They're in full bloom right now - do I prune after blooming later this summer or do I wait until spring?