![Bob Morris Wet mulch against the trunk of this apple tree caused a serious disease problem called collar rot. Keeping the mulch a short distance from the trunk helps keep the trunk Bob Morris Wet mulch against the trunk of this apple tree caused a serious disease problem called collar rot. Keeping the mulch a short distance from the trunk helps keep the trunk](https://www.reviewjournal.com/wp-content/uploads/2017/05/8520520_web1_copy_apple-with-collar-right-crown-rot-lebanon.jpg)
Bob Morris Wet mulch against the trunk of this apple tree caused a serious disease problem called collar rot. Keeping the mulch a short distance from the trunk helps keep the trunk
![Phytophthora Crown, Collar and Root Rot of Apple and Cherry | WSU Tree Fruit | Washington State University Phytophthora Crown, Collar and Root Rot of Apple and Cherry | WSU Tree Fruit | Washington State University](http://treefruit.wsu.edu/wp-content/uploads/2018/03/phytophthora-crown-and-root-rot-20-e1521588567735.jpg)
Phytophthora Crown, Collar and Root Rot of Apple and Cherry | WSU Tree Fruit | Washington State University
![Phytophthora Crown, Collar and Root Rot of Apple and Cherry | WSU Tree Fruit | Washington State University Phytophthora Crown, Collar and Root Rot of Apple and Cherry | WSU Tree Fruit | Washington State University](http://treefruit.wsu.edu/wp-content/uploads/2018/03/Phytop-Fig3.jpg)
Phytophthora Crown, Collar and Root Rot of Apple and Cherry | WSU Tree Fruit | Washington State University
![Collar rot & crown rot symptoms (Pennsylvania Tree Fruit Production... | Download Scientific Diagram Collar rot & crown rot symptoms (Pennsylvania Tree Fruit Production... | Download Scientific Diagram](https://www.researchgate.net/publication/268742851/figure/fig9/AS:295449597628446@1447452081854/Collar-rot-crown-rot-symptoms-Pennsylvania-Tree-Fruit-Production-Guide-and-tree.png)