Hi. We are wondering what this “disease” is on the leaves of one of our apple trees?

As the leaf gets more “covered” it starts to curl up – as in the final photo. They don’t appear to be moving, so we didn’t think they are aphids – but have no clue!!! Thank you for any help you can provide.

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1 Comment To "Hi. We are wondering what this “disease” is on the leaves of one of our apple trees?"

#1 Comment By Downtoearthdigs On 05/30/2019 @ 8:19 am

This appears to be a heavy Aphid infestation.

Neem Oil is a good treatment.
Follow packaging directions for application. I would recommend treating every 3 days for 2 weeks.
https://www.gardeningknowhow.com/plant-problems/pests/insects/aphids-tree-disease.htm ^[1]
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm ^[2]

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[1] https://www.gardeningknowhow.com/plant-problems/pests/insects/aphids-tree-disease.htm: https://www.gardeningknowhow.com/plant-problems/pests/insects/aphids-tree-disease.htm

[2] https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

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