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
Vall de Ribes Vall de Ribes The Vall de Ribes is a geographic zone in the northwest of the Ripollès in the valley of the river Freser. Its largest municipality is Ribes de Freser. It also contains the municipalities of Queralbs, Toses, Planoles, Pardines and Campelles, and the sanctuary and resort of Vall de Núria. The Vall de Ribes was historically a part of the county of Cerdanya and ecclesiastically pertained to the diocese of Urgell. This made it unlike the rest of the Ripollès, which was part of the county of Osona and the diocese of Vic. During the rule of Count