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
Allium nigrum not supported by molecular data which indicate "Allium israeliticum" Fragman & R.M. Fritsch, as a distinct new species. WCLSPF recognises both as distinct species. The name "nigrum" (Latin: black) is derived from the colour of the ovaries. The plant is a frequent ornamental in European and North American gardens, having been introduced in the early twentieth century. It is produced in Taean and Seosan in South Korea. Allium nigrum Allium nigrum, common name black garlic, broad-leaved leek, or broadleaf garlic, is a Middle Eastern species of wild onion. It lacks the onion or garlic scent shared by most of the