In my Seattle house I had a commercial building on the north side of the property. It was a 12 -15' cinder block wall and faced south. Between the house and next to the wall was a fragrant yellow rose. There were years when this rose bloomed all year long. Heat from the wall and protection from the buildings gave it a great location. You can see the rose behind the sunflowers. Also, a former partner.
I used to keep up with the Portland weather, and was surprised that a good rule pf thumb was 10 degrees warmer than here in the winter and 10 degrees cooler in the summer. We've already had killing freezes here, I drug all my tender plants into the hot tub area and they made it. A couple I was going to dig and pot are still in the yard, so I'll have to wait until they are totally dormant before I dig them.