I will say I’ve been surprised how well bulbs and tender perennials handle these unexpected cold snaps – and this is an area where I feel like it is pretty safe to plant to the new zones (and a little easier to push your zone). My garden has butterfly ginger, amaryllis, and gladio...
Gardening in Fairbanks Alaska, USDA hardiness zone 1, diary, hardy perennialsDM of AK
zone. However, this is not always the case. The milder winters of a warmer zone are usually accompanied by higher summer temperatures which are tolerated by some plants but not by others. In a milder zone erratic occurrence of frosts and warm spells during the late winter and spring may ...