Why won't my wisteria flower

Why won't my wisteria flower


  • Alina WAlina W Posts: 1,445

    You need to tell us a bit more. How old is it? Where is it growing? What direction does it face?

  • Jerry2Jerry2 Posts: 4
    Hi ,Alina W .sorry for lack of info. It is growing in a south facing position .two years old, and growing against the gable end of the house. And has really grown well. Thanks for your reply,jerry
  • Alina WAlina W Posts: 1,445

    Position sounds fine and the plant healthy so, unless you bought it in flower, it's likely to be too young. Some wisterias are seed grown, and they can take up to seven years to flower.

    The other point is have you pruned it correctly - look here for instructions:


  • Jerry2Jerry2 Posts: 4
    Thank's hope to speak to u again soon , jerry
  • Gold1locksGold1locks Posts: 499

    I planted two expensive grafted hybrids three years ago, and they still don't look as if they are going to flower this year! image

    I have let them grow to fill the available space.. This year I am going to cut back all but the essential growth, and will prune these back in July to encourage flower bud development next year.

  • Chris 7Chris 7 Posts: 102

    It may well be the pruning ... mine is about 3 years old ... I've never had flowers,  but last year I looked at a couple of videos about pruning (when and how).  I followed these rules and this year I've had loads of flower buds !

    Thats the good news,  the bad news is that with all this rain,  the buds got completely waterlogged and they've just rotted and dropped off.

    Still,  better luck next time !

    Si I think the answer could well be to prune according to the YouTube pruning instructions !


  • hi ive had my wisteria  about 4 years and it didnt flower untill i gave it a hard pruning now it has got lots of flower heads on it  i think if im not mistaken you prune it twice once in the spring and again in the autumn  thats what i do and it works

  • Gold1locksGold1locks Posts: 499

    In Boston market yesterday I saw some wisteria "Amethyst Falls" that were only 70cm tall, and they had several big flower buds.  I am sure one of mine is the same variety!image  

    So, out with the secateurs in June, cut out all but the strongest stems, and cut the remaining ones back by half. Hopefully I'll see buds developing next February, and I'll cut back again to fatten them up. 

  • Grafted plants are supposed to be the best and in flower when you buy but when I got mine I would have needed a second mortgage to buy what I wanted so went for a small potted 'whip'.  I had a new garden at the time so there was nothing in it so all plants purchsed where small.  That wisteria took over ten years to produce any flowers at all!  Sadly, at that time I didn't have any pruning information so just stopped it looking sad & weeping willow like!  Once it started flowering it was lovely but not the blue I expected, more of a lilac color.   I have now moved house and didn't have the heart to did it up as it had spent so much time 'settling'.  I am now trying again with some bare root plants and so far they are still like dead twigs! 

  • My wisteria produces plenty of flower buds but then they just seem to stall and wither. Can you help?

  • ginnie1ginnie1 Posts: 9

    Hi Gaye sounds like the frost has got to it.Fleece it up on a night or it could happen again

  • YviestevieYviestevie Posts: 3,738

    I have had problems getting my wisteria to flower.  Here is the info I have been given from a gardener who specialises in them.

    Prune side shoots back by 80 per cent in the second or third week of August (I'm based in the Midlands he did say the weeks would vary for different parts of the country)

    In February feed lightly with Fish Blood and Bone.

    Prune again to 4 buds when the buds begin to swell in the spring.

    Feed lightly with Phosphate to encourage the flowers.

    I'm determined to get this plant flowering, it's five years old and came from good root stock.  It's become a bit of a challenge now.


    Hi from Kingswinford in the West Midlands
  • I have 4 year old blue wisteria it seems fine flowers comes in early june  but my westeria flowers are small very dense and heavy not like what we usaualy see in the pictures and the fragrance is a bit spicy is it a different kind or am i doing some thing wrong here

    please help

  • thank you for such a detailed discription , you have such beautiful collection of wisteria

    mine is not really slow to grow flowers are plenty as looking at the size of plant may be i am in canada does it make sense ,but my dilemma is fowers are not lose cone like you have mine are very thick closed cluster of petals it look beautiful but i wanted to have one like yours i think i'll get some pictures and post it  image

  • fidgetbonesfidgetbones Posts: 11,085

    Beautiful wisteria , Doghouse riley.

    Are they all grafted, or do you have any on their own roots.? I took a layer off of mine. It tends to flower better than the grafted one.

    It's not a mess, it's a nature reserve.
  • ObelixxObelixx Posts: 10,143


    We inherited this one and I gave it a good tidy in December/January.   After flowering it was much too wild and woolly so I cit back all the stems that were hanging too low or too far out or trying to disappear under the roof behind and it has not only grown back well but is flowering again, as is its pal which only had a light prune after flowering.

    OH is so chuffed with them - both lilac - that he bought me a white one to grow on a trellis and pergola we haven't yet built.  It's sat in a pot with framework and doing well.

    They do need two prunes a year to promote flwoering buds instead of just growth. For info, see this advice form the RHS - https://www.rhs.org.uk/advice/profile?pid=242

    The Vendée, France
  • Thankyou Doghouse riley

    here are some pictures of my not so happy wisteria, i bought it from a garden centre and have no idea

    what kind it is and if it is grafted or not, basicelly i chose this spot to make a polite privacy curtain between our deck and neighbors my idea was flower would b long enough to give us beautiful curtain

    these flowers are not more then 6''

    please help me understand my wisteria ,fyi i never pruned it afraid that it would take years to grow back now i see the bark on the old stems are peeling offimageimageimageimage 

  • i live in toronto so pruning time is also an issue it would take six months for my wisteria to be dead then comeback to life sometime in april image  location is very ideal very sunny at least for 6 hours

    Last edited: 14 June 2017 18:26:17

  • CloggieCloggie Posts: 1,141

    That is American Wisteria fmhamkhayal.  I used to grow it in my last garden.  image  Mine was Amethyst Falls.  I grew this from a Garden Centre regular offering and it had been in about 2 or 3 years when I took this photo.  

    In UK, they are not nearly as vigorous as the Chinese or Japanese types and have the shortest blooms.

    I have now taken on an established Chinese Wisteria and my neighbour recently asked for help to get her Japanese one flowering since I'd had success with mine since moving in.  My predecessors (her previous neighbours) cut mine off at waist height each year for about 14 years as they were overwhelmed by it.

    Apparently you can tell Chinese from Japanese by the way the tendrils curl - don't hold me to it but I think it's clockwise is Chinese and Japanese is anti-(counter)-clockwise - I have compared mine and my neighbour's and they don't rotate the same way.  The other way to tell is her blooms are the longest, Japanese are the longest blooms.

    When I moved in, I installed a sturdy pergola and began training the poor thing.  I don't call myself an expert but I've had success and I believe it is ALL in the pruning, whatever the nationality.  If you let it get away from you, it will just sprawl and you'll have tons of whips and leaves.

    What I do is to choose a good, strong, main stem and cut back every single side shoot to 5 leaf sprouts.  I do this at any time of year, regardless.  If it throws out a stem that doesn't suit my "plan", I cut it off at 5 leaf sproutlet thingies.

    Then last February, I went out and cut all these nubs where I'd cut it back to 5 leaves to 3 leaves.

    This was the result this year which is the third year growing it from a hacked off waist high sad looking gnarled nub of a thing.

    Oh and the photo from my old garden was June, whereas the new one is the beginning of May so the American Wisteria flowers later.

    This is my experience, I'm an enthusiast not an expert but hope this helps.


  • CloggieCloggie Posts: 1,141

    Oh don't confuse the Amethyst Falls in the foreground of the first photo with the potato vine in the background of the same shot.

    This was a lucky colour accident and I thought it looked lovely but the Amethyst Falls are the small blobs on top of the pergola.  The potato vine is along the back fence and was really vigorous almost overwhelming the white Spiraea Bridal Wreath.

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