R. williamsianum
Description: Dense spreading shrub, becoming dome shaped. Round dark green leaves, coppery when young. Loose trusses of pink bell shaped flowers. Best in an open site. Avoid frost pockets.
Ultimate Height: 1.5 meters after 10 years
Flowering Period: This plants flowers in the North Hemisphere around April - May
Availability:  YES this item is normaly in stock, but due to exceptional demand or propagation difficulties there may be a temporary shortage.
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R. williamsianum

Hardiness
UK Zone
4
RHS Zone
H (Fully Hardy)
EGF Zone
H2
US Zone
7A
Min Temp
-18°C (0°F)
Hardy in all but the coldest parts of Pacific Northwest and UK, France and northern Italy, around Bergen (Norway) and mildest parts of NE USA such as Cape Cod and parts of Long Island. (Please note.)