"Timothy Murphy" wrote in message
...
Bob Hobden wrote:

Anyone got a secret cure for non-flowering wisteria?
I've tried strict pruning for 4 years.

They like, indeed require, full sun for at least a good part of the day
to
flower well. Then they do require time to get big enough to flower, I
forget how many years it took ours to flower but it took it 5 years to
start to growing well and it was some years later before it flowered.
That
was after I'd pruned it so it made flowering spurs.

Thanks very much for all the advice.
I ought to confess that the garden is in Italy (Tuscany)
which perhaps means I should not have asked here?
The two wisteria get more than enough sun,
and grow like wildfire, in fact have almost taken over our small garden.
One of the wisteria had climbed up a drain-pipe to the second floor,
but my wife pulled it down from that
as she was worried it would get to the roof and damage it.

So I guess the problem is due to bad pruning.

--
Timothy Murphy
e-mail: gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin 2, Ireland

If they are growing well you can rule out lack of water which is a common
reason for them to be slow to get away here in the UK.

Were they clones i.e. cuttings or grafts? or seedlings? both will flower but
seedlings generally take a lot longer, but in both cases they need a good
woody framework before they settle down to flower well.
Summer pruning can help certainly. but I have never pruned my 30 year old
plant which flowers prolifically ever year, but I do let it go horizontal
and hang down, both of which does the same as summer pruning and makes the
Wisteria think it has reached the top of its tall tree!


--
Charlie, Gardening in Cornwall
Holders of National Collections of Clematis viticella
and Lapageria rosea cvs
http://www.roselandhouse.co.uk