Aphids on apple trees - Ask Extension
We have discovered what we think are wooly apple aphids in our orchard (approx 20 trees) . Can you reccomend a treatment for this problem? We suspec...
Knowledgebase
Aphids on apple trees #795667
Asked June 13, 2022, 11:03 AM EDT
We have discovered what we think are wooly apple aphids in our orchard (approx 20 trees) . Can you reccomend a treatment for this problem? We suspect these may not only be on the surface, but may also be in the root system. We also have some curled leaves on or cherry tree which seems to be infested with something.
We are located near New Castle in western Garfield county. Thank you, Tom
Garfield County Colorado
Expert Response
Hi Tom,
Sorry for the delay in responding. Your best contact would be the Garfield County Extension Office: <personal data hidden>
However, if that is wooly apple aphid (hard to tell, but you can examine if it's insects), unless it's covering more significant portions of the trees, these small patches should not cause any harm to the tree. If you see infestations on branches or leaves, then control might be necessary, but only if they are in the fruiting area of the trees.
Though this publication is from Washington State, it has a great description and recommendations of how to scout and monitor this insect: http://treefruit.wsu.edu/crop-protection/opm/woolly-apple-aphid/
Unfortunately, I am unable to zoom in enough to determine what's on the cherry tree leaves. But maybe it's aphids also? There are leaf-curling aphids. For the most part, if it is this insect, it's not going to cause long-term damage to the tree and it should still fruit and produce normally. You could consider summer horticultural oils to suppress adults.
Sorry for the delay in responding. Your best contact would be the Garfield County Extension Office: <personal data hidden>
However, if that is wooly apple aphid (hard to tell, but you can examine if it's insects), unless it's covering more significant portions of the trees, these small patches should not cause any harm to the tree. If you see infestations on branches or leaves, then control might be necessary, but only if they are in the fruiting area of the trees.
Though this publication is from Washington State, it has a great description and recommendations of how to scout and monitor this insect: http://treefruit.wsu.edu/crop-protection/opm/woolly-apple-aphid/
Unfortunately, I am unable to zoom in enough to determine what's on the cherry tree leaves. But maybe it's aphids also? There are leaf-curling aphids. For the most part, if it is this insect, it's not going to cause long-term damage to the tree and it should still fruit and produce normally. You could consider summer horticultural oils to suppress adults.
