Susan,
I grew semps in a cold pocket of borderline Zone 4-5 in MA and saw 32 below zero more than once. The semps were fine. I did lose 'Commander Hay' every year there and finally gave it up as a bad job!
Tim, you'll be able to grow most with no problems here in Oregon. Some of the species from Turkey and some of the Balkan species don't like our winter wet but most things are fine.
You'll have to come to the clinic next spring, although the clinic will NOT cure the addiction.
Kevin
