Scientific name: Rubus fruticosus x R. idaeus
The tayberry (Rubus fruticosus x R. idaeus) is a cultivated shrub in the genus Rubus of the family Rosaceae patented in 1979 as a cross between a blackberry and a red raspberry, and named after the River Tay in Scotland.
The fruit is sweeter, much larger, and more aromatic than that of the loganberry, itself a blackberry and red raspberry cross. The tayberry is grown for its edible fruits which can be eaten raw or cooked, but the fruit do not pick easily by hand and cannot be machine harvested, so they have not become a commercially grown berry crop. As a domestic crop, this plant has gained the Royal Horticultural Society's Award of Garden Merit.