Hi Owen. I'm in north central Washington, kind of right below you. We are in the Methow valley, closer to the mountains, a little west of the Okanogan, and we are zone 5 here. The cypress you have looks to be hardy only to zone 7. If I were you, I would give it good winter protection if you plan to leave it out next winter. I know you are in somewhat of a banana belt up there, but I doubt it's zone 7. The weather has been so sporadic lately! After several really mild winters in a row, we got hammered this past winter with lots of snow, then rain, then sub-zero temps. Hoping it goes back to the milder version of winter this year.
