main characteristic of the damson is its distinctive rich flavour; unlike other plums it is both high in sugars and highly astringent. The fruit of the damson can also be identified by its shape, which is usually ovoid and slightly pointed at one end, or pyriform; its smooth-textured yellow-green flesh; and its skin, which ranges from dark blue to indigo to near-black depending on the variety (other types of Prunus domestica can have purple, yellow or red skin). Most damsons are of the "clingstone" type, where the flesh adheres to the stone. The damson is broadly similar to the semi-wild bullace, also classified as ssp. insititia, which is a smaller but invariably round plum with purple or yellowish-green skin. Damsons generally have a deeply furrowed stone, unlike bullaces, and unlike prunes cannot be successfully dried. Most individual damson varieties can be conclusively identified by examining the fruit's stone, which varies in shape, size and texture. The tree blossoms with small, white flowers in early April in the Northern hemisphere and fruit is harvested from late August to September or October, depending on the cultivar. Damsons do take a long time to bear fruit, as the ancient rhyme has it:- "He who plants plums Plants for his sons. He who plants damsons Plants for his grandsons." Cultivars Several cultivars have been selected, and some are found in Great Britain, Ireland and the United States. There are still relatively few varieties of damson, with The Garden recording no more than "eight or nine varieties" in existence at the end of the 19th century; some are self-fertile and can reproduce from seed as well as by grafting. The cultivars 'Farleigh Damson' and 'Prune Damson' have gained the Royal Horticultural Society's Award of Garden Merit. 'Farleigh Damson' (syn. 'Crittenden's Prolific', 'Strood Cluster') is named after the village of East Farleigh in Kent, where it was raised by James Crittenden in the early 19th century. An 1871 letter to the Journal of horticulture and practical gardening claimed that the original seedling had been found by a Mr. Herbert, the tenant of a market garden in Strood, who had given it to Crittenden. It has small, roundish, black fruit, with a blue bloom, and is a very heavy bearer. Its heavy cropping led to it being widely planted in England. 'Shropshire Prune' (syn. 'Prune Damson', 'Long Damson', 'Damascene', 'Westmoreland Damson', 'Cheshire Damson') is a very old