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 nevadense dully toothed lobes. The inflorescence is a dense raceme of up to 20 flowers hanging pendent or held erect on the branches. Each flower has opens into a corolla-like array of five pinkish red sepals with five smaller white petals in a tube at the center. The fruit is an edible blue-black berry under a centimeter wide. It is somewhat waxy in texture and studded with glandular hairs. Ribes nevadense Ribes nevadense (sometimes spelled "R. nevadaense") is a species of currant known by the common names Sierra currant and mountain pink currant. "Ribes nevadense" is native to several of the