MSUE Christmas Tree
Area of Expertise Team
| Degree
Days (Base 50F) |
Insect | Stage |
| 25-100 | Cooley
Spruce Gall Adelgid Eastern Spruce Gall Adelgid Pales Weevil Northern Pine Weevil Aimmerman Pine Moth |
1st
Adults Active 1st Adults Active 1st Adults Active 1st Adults Active 1st Larvae |
| 25-220 | White
Pine Weevil European Pine Shoot Moth |
1st
Adults Active 1st Larvae |
| 75-200 | Eastern Pine Shoot Borer | 1st Adults Active |
| 100-195 | European Pine Sawfly | 1st Larvae |
| 150-180 | Gypsy Moth | 1st Larvae |
| 150-200 | Spruce Needleminer | 1st Larvae |
| 200-300 | Balsam
Gall Midge Spruce Budworm Cooley Spruce Gall Adelgid |
1st
Adults Active 1st Larvae 1st Galls |
| 225-300 | Pine Needle Scale | 1st Crawlers |
| 300-350 | Jack
Pine Budworm Pine Root Collar Weevil |
1st
Larvae 1st Adults Active |
| 400-500 | Pine
Tortoise Scale Pine Needle Midge |
1st
Crawlers 1st Adults Active |
| 400-600 | Redheaded
Pine Sawfly Introduced Pine Sawfly |
1st
Larvae 1st Larvae |
| 450-600 | Pine Chafer (Anomela Beetle) | 1st Adults Active |
| 700-800 | European Pine Shoot Moth | Adults Active |
| 700-900 | Spruce
Bud Scale Pine Tortoise Scale |
1st
Crawlers 2nd Crawlers |
| 1200-1400 | Pales
Weevil Pine Root Collar Weevil White Pine Weevil Northern Pine Weevil |
2nd
Adults Active 2nd Adults Active 2nd Adults Active 2nd Adults Active |
|
(Note: The above weevil adults will be active from this point on through the rest of the growing season.) |
||
| 1300-1400 | Pine Needle Scale | 2nd Crawlers Active |
| 1500-1600 | Cooley
Spruce Gall Adelgid Eastern Spruce Gall Adelgid |
2nd
Adults Active 2nd Adults Active |