Blackcurrant can damage both unopened and open flowers when the temperature falls below . The flowers at the base of the strig are more protected by the foliage and are less likely to be damaged. In midsummer the strigs of green fruit ripen to edible berries, very dark purple in colour, almost black, with glossy skins and persistent calyxes at the apex, each containing many seeds. An established bush can produce about 4.5 kilograms (10 pounds) of fruit each year. Plants from Northern Asia are sometimes distinguished as a separate variety, "Ribes nigrum" var. "sibiricum", of which "Ribes cyathiforme" is considered
Ribes sanguineum each flower is in diameter, with five red or pink petals. The fruit is a dark purple oval berry about long, edible but with an insipid taste. The Latin specific epithet "sanguineum" means “blood-red” "Ribes sanguineum" was introduced into cultivation by 19th century Scottish botanist David Douglas. It and its varieties and cultivars are popular garden shrubs, valued for their brightly colored and scented flowers in early spring, and birds and habitat support. Numerous cultivars have been selected with flowers ranging from white to dark red. The following cultivars have gained the Royal Horticultural Society’s Award of Garden Merit:- Ribes