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Talkback: Wilting wisteria: an update
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I waited 7 years for a flower and during the 8th year vine weevil killed the plant!
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I have recently removed a Wisteria for a client which became very sick and wilted last year just as the flowers where coming to their peak. Reading all the comments in the original post last year it becomes apparent in most cases that this diease occurred just after or during lowering which leads to think that it seems likely to have entered via the flowers (similar to Fireblight) maybe from pollen transfered by bees from an infected plant.
My client and I decided to leave the plant and see if it managed a recovery but this year it is totally dead and just he rootstock has started to grow. That would seem to indicate that the roots are fine although it concurs entirely with the RHS letter as the plant is clearly dead right down to the graft point. As many of you will know there no real point in letting the rootstock grow as it will not flower well, being used only for it's vigorous root growth. So it's all gone now!
Growing the seed from wisteria is not really advisable as after a few years you almost certain to get a plant which produces very little flower and maybe even quite poor growth. Really it's job for Nurserymen to select good flowering stock and graft it to vigorous rootstocks to produce a strong plant with plenty of flowers. I don't know waht they use as a rootstock though? I guess you could be lucky and produce a new colour from seed but it will still need grafting, quite possible but it needs a great deal of patience and is a big gamble in time.
Keep growing
Barry