European Red Oblisk Beech Tree White fungus - Ask Extension
We planted this tree last year. We just noticed white fungus or something on the back of leaves. What is this and how do we treat it? Thanks
Knowledgebase
European Red Oblisk Beech Tree White fungus #869100
Asked May 19, 2024, 12:53 PM EDT
We planted this tree last year. We just noticed white fungus or something on the back of leaves. What is this and how do we treat it? Thanks
Wayne County Michigan
Expert Response
Hello Monica
These insects are Phyllaphis fagi, woolly beach leaf aphids. They can exude sticky honey dew and make a mess, but are not life threatening to the tree. You can rinse them off with a strong spray of water, which is most friendly to preserving beneficial insects hat may also be present.
Here is more detail and more management options:
These insects are Phyllaphis fagi, woolly beach leaf aphids. They can exude sticky honey dew and make a mess, but are not life threatening to the tree. You can rinse them off with a strong spray of water, which is most friendly to preserving beneficial insects hat may also be present.
Here is more detail and more management options:
Woolly beech aphid management Phyllaphis fagi
https://hyg.ipm.illinois.edu/pastpest/200510f.html
Pictures:
