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Joined: Thu May 14, 2009 7:21 am
Location: Binghamton,NY


Hi...stellar Spring here in the N.East!!!!

I have a wysteria vine that doesn't bloom. Anyone have an idea as to what I can do? Zone # 5


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Super Green Thumb
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Joined: Sun Feb 15, 2009 6:04 pm
Location: TN/GA 7b

Someone recently posted about a mock orange not blooming. Both of these are plants that are notorious for failing to bloom for some of the same reasons. You didn't tell us much about the conditions it's in, age etc, but here's some things off the top of my head:

*how old is the vine? wisteria can take between three and seven years to get established enough to bloom (10 -15 years if grown from seed)

*is it in full sun? Lots of plants that like full sun will grow and look thriving in less, but won't bloom

*pruning - wisteria requires regular pruning to keep it from getting totally out of control and taking over your yard, but if you are pruning off the flower bearing spurs, you can cut down the blooming.

*how is it fertilized? Is it in, or next to a lawn? Lawn fertilizer can run off and it is usually high in nitrogen. Nitrogen tends to encourage foliage growth at the expense of flowering (for lawn grass we want leaves not flowers). If you think high nitrogen fertilizer could be the problem, balance this out by giving it high phosphate fertilizer in the fall or early spring.

*it likes rich moist but well drained soil

If none of these seem to be the problem, one thing I have seen recommended a number of places is root pruning - just plunge your shovel a foot or so down into the soil a bunch of places around the plant at a distance of a couple feet away from the trunk. This severs some of the outer roots and can shock the plant into blooming. You would do this in late fall, to prepare it to bloom next year.

Part of the message is that plants tend to reproduce more when times are tough to be sure if they don't survive, a next generation will. If you make times too easy, they relax and just grow...

Let us know a bit more about the conditions yours is in and if any of this seems like it might be the problem.

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Joined: Fri Aug 06, 2010 3:34 pm
Location: Eureka, California

Wisteria help

I don't know much about wisteria and thought I'd ask a question about it. I live on the coast in California, USDA Zone 10a. I have a wisteria vine the previous homeowner planted that is growing near our back porch. The vine gets full sun, has been in place at least three and a half years since we moved here, but probably longer than that. The vine is wrapped around the porch arbor post and about four to five feet tall. The first two years the vine produced green green leaves but no flowers. Last year small black oval spots appeared all over the vine and it stopped producing leaves. I suspect it will not recover but I have seen the barest of nubs showing where the leaves normally grow.

I don't know if these are thirsty vines or need a lot of feeding, any help here would be appreciated. I don't think the vine is big enough to have to prune yet.

Anyone have ideas as to what might be wrong with my wisteria vine? Thanks!

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