Flannel Bush
Fremontodendron californicum
This is a shorter of the California flannels. Generally it will stay below about 10ft. They put out an amazing show of these buttercup-yellow flowers in spring, i.e. right now. Right Now!
I hear from the grapevine that they will espalier well. They’re totally freeze tolerant so you could probably grow it in Oregon too, just try to keep them a bit drier in the summer.