| How do you Stop the Hemlock Wooly Adelgid? I learned what it's called by the Keystone Tree experts. |
| One possible treatment is the use of horticultural oil but the timing is critical in order for it to be effective. For a definite identification of the pest and the most up to date control measures recommended in your area, contact your local County Extension at 391-9840. Do this soon because this pest can kill a tree in just one season. |
