5 Yr Old Chinese Wisteria Does Not Bloom - Knowledgebase Question

Name: peter gorbach
Santa Maria, CA
Avatar for pgorbach
Question by pgorbach
October 5, 2004
This is one of your plants. It has now been FIVE years and it still DOES NOT bloom. Apparently, it was a dud. Is there anything I can do to stimulate the bloom? Other than chop it out and start all over.

Any help would be appreciated.

Answer from NGA
October 5, 2004
I think the biggest frustration gardeners face when growing wisteria is that plants have a longer than average juvenile period and sometimes fail to bloom as expected. A plant will also fail to bloom if: it does not receive full sunlight; there is excessive vegetative growth that may have been stimulated by excess nitrogen fertilizer; it is pruned heavily in winter and spring, which encourages vigorous, vegetative growth; and/or it is pruned improperly. Also, in severe winters, flower buds may be injured or killed. The following practices may help induce non-blooming vines to flower: a heavy application of superphosphate (0-20-0) in early spring (3#-5# per 100 square feet) severe pruning of new growth in late spring or early summer root pruning in late fall.

There's still hope for your wisteria. Don't give up yet, instead try the above techniques to coax your wisteria into bloom.

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