Original sentence: The flowers are produced in mid summer in panicles 3-6 cm long, each flower creamy-white, with a tubular base and a four-lobed corolla ('petals') 4–6 mm diameter.The flowers produce a strong, sweet fragrance that many people find unpleasant
Edited sentence: The flowers are produced in mid summer in panicles 3-6 cm long, each flower creamy-white, with a tubular base and a four-lobed corolla ('petals') 4–6 mm diameter; they have a sickly-sweet odour