Will rose spray damage wisteria?

[Willow]

Will spraying roses against black spot & greenfly damage a wisteria which is growing over the same arch?

[p.penn]

I wouldn't have thought so but don't quote me! What does it say on the back of the bottle?

You could always email the makers I guess.

[Willow]

The one I normally use is Rose clear - and the only thing it says on the back is to keep it away from bodies of water and edible crops..

[p.penn]

Hmm - personally, I can't see why it would damage it then.

[p.penn]

But don't quote me!

[Willow]

I'm sure I sprayed last year but the wisteria has just turned into a triffid and is now all over the place...
Flaming green fly!! I looked at the begining of the week and was so chuffed that I couldnt see any, now they've appreared in hoards! together with blackspot

[Homemade]

The spray won't hurt the wisteria. If by any chance you have strong sunshine at time of spraying it might just scorch the flowers - but thats not likely this year!

A wisteria is really rather large for an arch. You might want to move it next winter. If not you will need to keep trimming back the new growth. Wisteria flowers on old wood so keep a structure of main stems.

[Willow]

Thanks Homemade, I'll get the spray out if it ever stops raining -
The arch is pretty huge & made of 4" x 4" timber , about 6ft plus wide and 4ft in depth so hopefully it wont be too much of a problem for a while yet..
(Having said that, the wisteria does seem to grow pretty fast )

[p.penn]

Did you know that bog standard washing up liquid (diluted) works well on greenfly?

[Willow]

Yep.. they get soap in their eyes and fall off the leaves... bum bum!!
Seriously, yes I've heard it works but I need it for the black spot too...