Perennials: Alstroemeria in a Container, 0 by Todd_Boland

Todd_Boland wrote:
McGlory I have A. aurea growing outside for years! It is perfectly hardy in zone 5...I don't even mulch. But I do get a good snow cover. I think a descent mulching would get them to survive in your area. I even got A. pallida to survive outside in the rock garden. I know they grow them in northern Norway! The key is to plant the tubers below the frost line. Around here, if I plant them 6 " deep, they are OK. I even get dahlia and glads to survive overwinter by planting them deep. I plan on trying some of the Ligtu's this year to see if I'm successful with them. Here's the A. aurea.