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4 messages
12/03/2013 at 22:54

Hi

Please can you advise on a very healthy wistria 8 years old and not one flower- ever.  Pruned 1 year as per the experts -near to the ground but that didn't work either. 

 Well-fed in spring, and in large trough and plenty of sun and shelter, grows well every year but doesn't produce any flowers- any suggestions at what I am doing wrong?.

13/03/2013 at 06:06

Hi, did you buy this wisteria as a named plant from a nursery, or did you get it from a friend or a plant stall or similar?   Wisteria do take a while to get to maturity  but those grown from seed rather than cuttings can take for ever to flower!  

As it's in a container, make sure it gets plenty of water in the late summer, as that's when the flower buds are forming.  

What sort of fertiliser has it been getting? - something with plenty of potash in it might nudge it into action - I'd sprinkle some sulphate of potash around it, or you could use a rose or tomato fertiliser.

And I'm a bit confused by your description of the pruning - you say you pruned it near to the ground one year?  What happened then?  Have you pruned it since?

Wisteria needs pruning twice a year to encourage the formation of the side shoots that bear the flowers http://apps.rhs.org.uk/advicesearch/profile.aspx?PID=242 I know it says do it after flowering, but just go by the time of the year if it hasn't flowered.

Good luck 

13/03/2013 at 12:20

Thank you we will try the potash feed and tomato feed.  The plant was a young plant from the plant centre.

Checking hte websites the buds I can see look to be new growth rather than flower buds so may have to wait another year, but stop using all multi purpose feeds and high nitrogen feeds and use feed on the NPK of  e.g.0 20 0

Many Thanks

13/03/2013 at 18:54

Fully agree with Dove.  I grew 2 wisteria from seed over 10 years ago and neither has yet flowered, despite being fed and pruned properly.  If anyone is interested in having a wisteria, I would highly recommend only buying one which is actually in flower in a garden centre.  That way you know what colour the flowers are and how fragrant they are.  Seed grown wisteria are extremely variable in those areas, and the 'good doers' are almost all grafted.  I'm now seriously considering buying a wisteria in flower and grafting pieces on to the ones I grew from seed, effectively demoting them to mere rootstock!

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