July 2022
![Maple leaves showing irregular dark blotches caused by anthracnose.](https://images.dnr.state.mn.us/publications/fid/2022/july/leaf-disease-feature.jpg)
Forecast: cool, wet, and spotty
Common spring leaf disease explained.
![Symptoms of introduced basswood thrips on basswood.](https://images.dnr.state.mn.us/publications/fid/2022/july/cupped-leaves-feature.jpg)
Leaf symptoms on basswood in northern Minnesota
Meet the tiny critter responsible for cupped leaves.
![Aspen seeds on tree](https://images.dnr.state.mn.us/publications/fid/2022/july/aspen-seeds-feature.jpg)
Prolific seed crops and sparse tree crowns observed on aspen and maple
Snow in June or aspen seeds?
![Oak damaged in June storm](https://images.dnr.state.mn.us/publications/fid/2022/july/oak-wilt-feature.jpg)
When it rains, it pours: Early-season storms may aid the spread of oak wilt
Oak wilt could run rampant this year.
![pine forest](https://images.dnr.state.mn.us/publications/fid/pine-forest-feature.jpg)
Archived issues
Browse back issues of Forest Insect and Disease Newsletter from 2020 to present.