This is my first year growing hops. I have two different varieties (cascade and willamette) and have found them EXTREMELY easy to grow here in central FL. They were kept in the fridge at my LFS. I bought them, brought them home, dumped top soil in a large pot, and planted the rhizomes about an inch deep. You're suppose to plant them with the white sprouts/tips facing up, but I couldn't really see any/find them. I watered lightly every day at first (now it's every other day). Within a week, the cascade had green sprouts above the soil. Two weeks, it has several full leaves. The willamette however didn't seem to be growing, so I decided to dig into it and find out what's up. lol Now there were visible growth tips. I shoved it back into the soil with the tips just below the surface. Few days later, it had green sprouts too.
It's been a couple months now and they've taken off. Couple feet high and really bushed out already. They're hauling booty.