Maple Trees
Q.

Maple/Acer

Zone London. SE172PL | Anonymous added on May 11, 2018 | Answered

I cut back my Acer last year as it was too tall. The new leaves are now coming out and this morning I noticed that there was a sticky substance on some of the leaves........what is it and will it kill the tree which is much loved. Is there anything I can buy to stop this........thank you x

A.
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Downtoearthdigs
Certified GKH Gardening Expert
Answered on May 12, 2018

This sounds like Honeydews, which is the residue from pests.
You can treat the tree with Neem Oil.
These links have more information.
https://www.gardeningknowhow.com/garden-how-to/info/what-is-honeydew.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

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