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Shrub, Species / Wild, Species Cross. Yellow. Large, single (4-8 petals) bloom form. Once-blooming spring or summer. USDA zone 6b through 9b (default). Height of 5' to 7' (150 to 215 cm). Width of 4' (120 cm). F.P. Knight (1966).
20 favorite votes.
Shrub, Species / Wild, Species Cross. Yellow. Large, single (4-8 petals) bloom form. Once-blooming spring or summer. USDA zone 6b through 9b (default). Height of 5' to 7' (150 to 215 cm). Width of 4' (120 cm). F.P. Knight (1966).
20 favorite votes.
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