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Jackmanii all leaves, few flowers

Posted by maureen1953 Z4 Central NY (My Page) on
Fri, Jul 17, 09 at 20:47

I have a humongous 15 yr old Jackmanii that has healthy vines and leaves but very few flowers. I spread wood ashes around the base of it (we have acid soil) this spring, and some organic tomato fertilizer...too much nitrogen, or what are your thoughts...thanks!

Maureen


Follow-Up Postings:

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RE: Jackmanii all leaves, few flowers

Tomato fertilizer should have high phosphorus than nitrogen and there is no need for the wood ashes so they should not affect bloom. Acid soil is fine.

Do you hard prune it every year? Jackmanii blooms on new growth.

Has the amount of sun it gets changed?


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RE: Jackmanii all leaves, few flowers

I prune it down to about 6 inches in early spring. I'll stop the wood ashes...don't know what else the problem would be. It's in full sun, roots shaded.


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RE: Jackmanii all leaves, few flowers

Try a bloom booster type fertilizer.


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