My wife and I just purchased a new (old) house and in the corner of the
lot is a cherry tree that's absolutely infested with aphids. It's not
huge - About 10 feet tall and 10 feet in diamter.
What's the best way to get of these critters and bring this tree back
to its former happy state?
A 2% soap solution is the quickest & best aphid control. This would be
about two ounces of dishwashing detergent per gallon of water, in a
sprayer. There is no extra "oomph" from paying extra for special
insecticidal soap where aphids are concerned, dishwishing detergent is
fine. Drench the tree especially the undersides of leaves. Once is usually
enough but at most a second time two weeks later.
-paghat the ratgirl
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Any general broad scope insecticide should do the job. Check the label for
bugs it attacks and if it is suitable for fruit trees. Don't forget protective
gear, including a breather mask and try for a calm day.
I am fortunate enough that my ivory-colored garage sits directly in
front of my vegetable garden. I used to have significant aphid
problems. Then one ear the asian ladybugs moved in (they were imported
as home garden pest controls) and I have never had problems since. The
aphids reappear in late october, after te ladybugs have turned in for
the winter. thousands of them overwinter in the garage, since in their
home range they overwinter in ivory-colored rock cliffs.
So, if you can find a way to maintain a ladybug population, they will
eat nothing but aphids.
In my opinion, chemical controls are overkill for aphids. In additio
to soap spray and ladybugs, control the ants that are likel
harvesting aphid "honeydew" by applying a sticky barrie
like tanglefoot around the trunk of the tree. Also keep in mind tha
pests often attack compromised plants. Aphids tend to be associate
with drought stress. Assess the overall health of your tree
I hope this helps
We bought the house a month ago - It's definitely not the happiest
cherry tree, but I'm hoping getting rid of the aphids is the first
step. We live in the Pacific Northwest, so the tree will get lots of
water October - June, but it is quite dry right now. Should I "water"
the tree? How do I do that? It's not huge - About 12 feet tall and 12
feet in diameter with maybe a 6-inch trunk?
If I move in some ladybugs how do I get them to stay in the tree?
Don't they just all fly away to the neighbour-lady's beautiful garden?
The problem with soap sprays are that they kill by contact. When the leaves are
rolled up, it is very difficult to coat the underside of them, to do the job.
Chemicals on the other hand form more of a mist that has a better chance of
reaching the aphids.
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