Posted: 24/09/2014 at 09:41
Those two are so different, choisya is glossy and evergreen, the philadelphus looks messy at this time of year anyway as it will be preparing to lose it's leaves for winter. I think your philadelphus looks fine. They have a certain number of thin stems anyway. Prune after flowering, but it's the thicker, older stems you prune out. I agree with Dove about the perfume. Not all plants have tidy habits, adds to their charm.