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By Ostrich

East northants, United Kingdom Gb

I have a plum tree that was so infested in June with aphids they must have been several milimeters deep nearly all over, not just the leaves, the trunk, all branches, dropping off to the ground below, it was horrible. I shook off at first but as the ants had found them & they were firmly stuck with honeydew this did not work. Insecticide I had to hand was useless, I tried spraying with Provado but no spray was effective as the beggars were protected by curled leaves. I cut off as many leaves I could reach & burnt them. All to no avail, I ended up severely pruning the tree in July, & lo they disappeared. The tree, which incidentally was about 10 foot tall (now about 7) loved being pruned & put out a lot of lovely new growth....BUT this new growth is now re-infected.
I want to treat it so that I can try & prevent any egg laying or whatever it is they do to reproduce!
I should have realised that something was wrong in the Spring, it was smothered in blossom which all turned brown & fell off in clumps.
Would a winter wash work? As they appear flightless can I wrap the trunk & branches in anything?
Would a systemic treatment be any use? As it has no fruit (well 2 plums) I do not mind if initially it bears no fruit. I honestly can't see how spraying with anything when it is in leaf is going to work as I have no hope of reaching every leaf, so am really looking for something I can do before the Spring, otherwise I'm afraid it's the AXE!! Nothing else was affected thank goodness.



sounds like you had both versions of aphids which infest plum trees - leaf curling and mealy aphids. Information and treatment recommendations for both in the link below; you'll probably need both a winter wash and acetamiprid in mid summer next year, the first for leaf curling aphid, the second for mealy aphid

9 Sep, 2016


Thank you bamboo. Is acetamiprid friendly insect safe?

13 Sep, 2016


No - its a neonicotinoid, but recent evidence suggests its much less likely to harm bees than all the other pesticides in the same group, see link below

Even so, if you use it, spray when most insects have stopped working, on a still evening, around dusk to reduce the possibility of harm to other insects.

13 Sep, 2016

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