Get a plant alp and then take cuttings every year.
Note though, Arborescen is the usual term to differentiate from the annual ...usually Marine..type...which is indeed raised from seed. Not quite as good alp but still worthwhile.
Look for VARIETIES of arborescens. Chatsworth is the most popular but, as I have already said, White Lady and White Queen are excellent whites too. However, suppliers seem few and far between ...I checked recently and the small supplier I used seems now not to be around. Luckily I have my varieties as stock plants.
Today the scent is very strong.....misty morning followed by humid warm sunshine is pushing the cherry pie scent very nicely now.