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7 messages
02/07/2013 at 19:00

I'm guessing this is some sort of virus or fungus causing the problem. The leaves appear healthy i.e. no marks or powdery appearance, before they wilt. Initially it was only one branch but now it appears to have spread to others on the same bush, albeit some branches still look very healthy. The fruit appears to be ripening OK. The bush did have some sawfly earlier in the season but this was dealt with by by a mixture of squeezing the caterpillars and lightly spaying with Bugclear (approved for fruit bushes) 

What is the best course of action?

1. Will the affected branches recover (there is some hint of tip growth being less affected)?

2. Is there a treatment?

3. Should I cut out the affected branches.

4. Should I grub out the whole bush in case it spreads to the other three very healthy ones?

02/07/2013 at 19:17

Is this a previously healthy and fruiting bush, or is it a young one?  If the latter, some individual plants (of any variety or species) are just not very strong and it's just a part of nature - don't waste effort on them.

02/07/2013 at 19:36

Thanks for your interest - This is a mature, usually heavy fruiting bush. We have suffered with sawfly in the past, but this years attack was minor in comparison. This leaf wilt is something completely new to me.

02/07/2013 at 19:48

It does sound odd, certainly not one of the usual diseases by the sound of it.  Have a look through these to see if any help:

http://www.ars-grin.gov/cor/ribes/ribsymp/ribsymp.html

It is an American site but, alas, most diseases get into the UK thanks to having ineffective (or absent) plant importing controls.

02/07/2013 at 21:52

Broomcupboard did you have a bad sawfly problem last year?  And maybe  the year before too?  

A severe sawfly attack does weaken the bushes and if you lost leaves these past two summers it may be the cause of your ailing plant.  I would try to do something this autumn ...like a winter oil wash.  Tar oil was the traditional treatment but now not available I think...not sure??

03/07/2013 at 18:37

as some of you are familier with saw fly i wonder if you would mind looking at a picture i posted today

03/07/2013 at 19:55

little ann - Bob has replied to your other post and confirmed they are gooseberry sawfly. Check out what he said - think you're fortunate to get them early!

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