That's fantastic, so pretty! How long did it take to get that big? Are the trees you want to plant vines on very small? Sorry if I misunderstood. These Hydrangeas are commonly added to mature trees in public gardens and Arboretums in OH, one of the reasons I would use for timing a visit. The baby one I added to a tree a few years before I moved to AL was growing at less than a foot per year, though I wasn't able to water it, at the base of a thirsty cottonwood tree. And you do have the answer to how it does in WA - very well!
