A Gardeners Forum Forums General Discussion The Plants and Flowers Forum Wisteria flower problems

I have a Wisteria in a large tub. It tried to flower last year, and also again this year. The only problem is, as soon as the flower trusses have formed, and begin to unfurl, all the buds drop off. I've repotted it into a larger tub this year, and I think I have watered it enough. The cultivar isn't known, it's just a Wisteria.

Can anyone help!!!!!

Cheers!!!

Maybe the repotting stressed it.

Have you fertilized it?

Late spring freeze?

On the front of our local primary school in Oxford, England is a wisteria that has been there for at least 20 years and never flowered. 4 years ago I started pruning in summer and autumn and sure enough, in 2006 it had a good display of flowers. In 2007 a vast array of buds appeared but just when they were about to blossom they all dropped off. The same has happened again this year. The roots are under tarmac and paving and it never gets any feed. There has been no frost. It should have been lovely, and wisteria with loads of flowers are common in Oxford – what’s wrong with ours?

Hi and welcome Richard.

Hmmm, here a sudden drop in temperature at the time of apple blossom blooming will cause 'blossom drop'. I'm wondering if it might be the same scenerio for Wisterias.

It seems if the daytime temps are warm and the night time temp drops below 13*C...then watch out...never has anything to do with frost here. I've also seen it happen with having not enough rain at the time also.