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My Wisteria flowers are not opening

My Wisteria has been on a south-facing fence for about 6 yrs and has always bloomed. However, this year the blooms have not fully opened and some appear to have died on the plant. I prune following advice. Any advice?
Graham D

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1 Comment To "My Wisteria flowers are not opening"

#1 Comment By Nikki On 05/22/2012 @ 6:16 am

I would guess that the nitrogen to phosphorus ratio is off. The soil may have an abundance of nitrogen, which would result in nice, healthy green growth but little to no blooms. Without the right amount of phosphorus, it will not bloom well. Bone meal is a great way to add phosphorus. This article will also help: [1]

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