Originally Posted by Bmaker62
here in northern NY I don't dare plant out side till at least the end of may.
I would start hardening them off as soon as the ground is workable in your area. Then plant them out a few weeks after.
The "memorial day" planting guide is more for vegetables that are annual crops and do not take light frosts well. Hops are perennial, and can withstand a fair bit of cold weather.
All of mine sprouted this week, in WI. They were under a 2 ft snow drift last week. The night time temps are still in the low 20's right now. I might cover them with Styrofoam plant covers at night this next week, with daytime highs only in the 20's. But even that is not necessary.