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'Jackmanii Alba' clematis Description
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'Jackmanii Alba' clematis photo
Availability:
Commercially available
Origin:
Bred by Charles Noble (United Kingdom, 1877).
Class:
Early Large Flowered.  
Bloom:
White, silver(y) shading, light blue highlights.  Average diameter 5".  Double bloom form.  Late summer.  
Habit:

Height: 10' to 12' (305 to 365cm).  
Growing:
USDA zone 4b through 9b.  Plant in sun or partial shade.  It blooms on the previous year's growth, so resist the urge to prune it in early spring.  In early spring, cut back to just above the lowest set of healthy buds.  
Patents:
Patent status unknown (to HelpMeFind).
Ploidy:
Diploid
Notes:
See 1888 reference for reason of blue blooms in spring.
 
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