Rubus fruticosus. A thornless blackberry shrub that produces very high yields of juicy, round berries at the end of summer, Rubus 'Black Satin' is a self fertile variety that has a vigorous growth habit. Easy to grow and needing very little maintenance, this variety only needs an annual prune to promote growth for the following year's crop. Other than that you can plant it and enjoy the delicious fruits later! Height: 300cm (118"). Spread: 300cm (118")