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 sericeum be over a centimeter (0.4 inch) long. The leaves are up to 4 centimeters (1.6 inches) long and are divided into several lobes with toothed edges. The leaves are hairy and glandular, especially on the undersides. The inflorescence is a solitary flower or a raceme of 2 or 3 flowers. Each flower has five reflexed green, red-tinged or red sepals around a tube-shaped ring of smaller whitish petals. The fruit is a purple berry up to 2.5 centimeters (1 inch) long which is covered in bristles. Ribes sericeum Ribes sericeum is a species of currant known by the common name