This plum tree is a cross between the plum/gage varieties 'Oullins' Green Gage x 'Early Favourite', 'Opal' hails from Sweden where it was introduced in 1925. One of the most reliable garden plums, and often referred to as an early Victoria. 'Opal' plums are of medium size, with a reddish-purple colour with a superb flavour. A self-fertile plum, therefore only one plum tree is required for pollination.
Month of picking: Late July
Type of plum: Eating
Fertility: this plum is self-fertile so needs no other plum tree for it to produce fruit.