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 divaricatum borne on petioles. The inflorescence is a small cluster of hanging flowers, each with reflexed purple-tinted green sepals and smaller, lighter petals encircling long, protruding stamens. The fruit is a sweet-tasting berry up to a centimeter wide which is black when ripe. It is similar to "Ribes lacustre" and "Ribes lobbii", but the former has smaller, reddish to maroon flowers and the latter has reddish flowers that resemble those of fuchsias and sticky leaves. The berries are edible, and are ripe when black. The fruit was food for a number of Native American groups of the Pacific Northwest, and other