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'Isobel Harkness' rose Description
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Photo courtesy of Margaret Furness
ARS:
Deep yellow Hybrid Tea.
Registration name: Isobel Harkness
Exhibition name: Isobel Harkness
Bloom:
Deep yellow. Moderate, tea fragrance. 28 to 34 petals. Average diameter 4.5". Large, full (26-40 petals), borne mostly solitary, in small clusters, high-centered to cupped bloom form. Blooms in flushes throughout the season. Medium, pointed, ovoid buds.
Habit:
Bushy, upright, well-branched. Medium, semi-glossy, dark green, leathery foliage. 5 to 7 leaflets.
Height: 2' to 30" (60 to 75cm). Width: 18" (45cm).
Growing:
USDA zone 7b and warmer. Disease susceptibility: susceptible to blackspot , susceptible to Mildew. Spring Pruning: Remove old canes and dead or diseased wood and cut back canes that cross. In warmer climates, cut back the remaining canes by about one-third. In colder areas, you'll probably find you'll have to prune a little more than that. Requires spring freeze protection (see glossary - Spring freeze protection) .
Patents:
United States - Patent No: PP 1,650 on 8 Oct 1957 VIEW USPTO PATENTApplication No: 620,779 on 6 Nov 1956 Albert Norman, Wisteria, Normady, Surrey, England, assignor to Armstrong Nurseries, Inc., Ontario, Calif.
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