O. fragrans is usually borderline here. Don't know where the orange one fits in the hardiness range for this species but mass plantings of a white(?) form on the UW campus had goofy looking winter tip damage awhile back - the most recent growths burned but the next set of leaves below came through, so the shrubs looked like they had antennae or quills. This kind of damage is the hallmark of a shrub that wants a longer, hotter growing season and/or milder winter.

There is another white(?) one in the plantings at CUH, it always looks a little thin and indifferent, with some discolored leaves.

On the other hand an older planting at the Washington Park Arboretum made a couple tree-like, persisting ones on a slippery clay bank near the staff compound. This might have been a hardier form not usually seen in nurseries here.

O. fragrans is usually borderline here. Don't know where the orange one fits in the hardiness range for this species but mass plantings of a white(?) form on the UW campus had goofy looking winter tip damage awhile back - the most recent growths burned but the next set of leaves below came through, so the shrubs looked like they had antennae or quills. This kind of damage is the hallmark of a shrub that wants a longer, hotter growing season and/or milder winter.

There is another white(?) one in the plantings at CUH, it always looks a little thin and indifferent, with some discolored leaves.

On the other hand an older planting at the Washington Park Arboretum made a couple tree-like, persisting ones on a slippery clay bank near the staff compound. This might have been a hardier form not usually seen in nurseries here.

You might be better off with 'San Jose'.

Here is a link that might be useful: 'San Jose'

Want to make a point? Repeat yourself!

I moved my plant to our new place in Edmonds last spring (2014) and planted it in the warmest micro-climate we have this spring (2015). This fall it is blooming profusely! It began on September 15 and has more and more flowers each day...still going strong on October 19. What a curious fragrance though...not nearly as nice or intense as O. delavayi, O. x burkwoodii or O. heterophyllus Rotundifolius...at least to my nose. The orange flower color is very interesting though since the others are all white.