Uniformly russeted sport of Bosc. Origin: discovered in 1980 by Robert Wimmers in his orchard in Hood River, Ore. A whole-tree mutation in a planting of OP-5 Bosc trees planted about 1970. USPP 7485 issued 2 Apr. 1991. Tree: same as Bosc, large and vigorous. Fruit: size and shape same as standard Bosc; skin develops a uniform bronze russet that appears about a month earlier than the russet on Golden Russet Bosc and has a rougher texture, develops russet in “poor russet” areas; ripe ≈1 week later than standard OP-5 Bosc; higher soluble solids.
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