What is causing these leaves to blister like this?
I have several redcurrant plants which recently started developing these strange symptoms on their leaves. Almost looks like blisters. I posted these on another gardening forum I use and somebody suggested that it could be how white pine blister rust presents itself on currants but this doesn't seem to check out. Any ideas?
Weird leaf symptoms
Weird leaf symptoms
Weird leaf symptoms
Posted
by: David Brewer
(3 points)
Posted: June 11, 2013
Answers
The RHS says it's currant blister aphid.
http://apps.rhs.org.uk/advicesearch/p...
Does not affect the fruit, and no treatment is needed.
Look underneath the leaves for the aphids.
For the fall (to reduce the populations of egg-laying aphids) and for next year, I'd make sure I had some early-flowering plants for beneficial insects nearby. I plant lots of yarrow, but other tiny-flowered plants (especially natives) are good. I had so many aphids on my kale leaves in April that they looked gray and fuzzy, but then the lady bugs and soldier beetles appeared, and within 2 days my kales were aphid-free!
http://apps.rhs.org.uk/advicesearch/p...
Does not affect the fruit, and no treatment is needed.
Look underneath the leaves for the aphids.
For the fall (to reduce the populations of egg-laying aphids) and for next year, I'd make sure I had some early-flowering plants for beneficial insects nearby. I plant lots of yarrow, but other tiny-flowered plants (especially natives) are good. I had so many aphids on my kale leaves in April that they looked gray and fuzzy, but then the lady bugs and soldier beetles appeared, and within 2 days my kales were aphid-free!
Posted
by: Tanya in the Garden
(128 points)
Posted: June 11, 2013
David Brewer commented,
Tanya thank you very much - there was a major aphid infestation that I did not spot! Never seen aphids cause symptoms like that before. over 11 years ago.
Tanya thank you very much - there was a major aphid infestation that I did not spot! Never seen aphids cause symptoms like that before. over 11 years ago.
Found the aphids that were causing it. They are on most leaves, can't believe I missed them!
aphid infestation
Posted
by: David Brewer
(3 points)
Posted: June 12, 2013
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