Large mauve-blue or violet flowers with a redder stripe. Creamy-yellow anthers on white filaments. Named in 1947 after Rowland Jackman's wife. According to Toomey & Leeds (2001), Rowland Jackman's propagator, A Voneshon, though that ‘Barbara Jackman’ could have been a seedling of C patents. John Howells suggests that the form may be faintly scented.
HEIGHT | 6-8 FT.
SPACING | 24-36 IN.
HARDINESS | ZONE 4A-9B
PRUNING | GROUP 2
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