Helena MT - E5549
Data is up through April 16, 2026
Growing Degree Days since January 1:
Apple Maggot
Biofix: January 1, 2026
Degree Days since Biofix:275
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Apple Maggot summary click here.
Billbugs
Biofix: January 13, 2026
Degree Days since Biofix:515
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Billbugs summary click here.
Cereal Leaf Beetle
Biofix: Not established yet for 2026
Degree Days since March:275
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Cereal Leaf Beetle summary click here.
Codling Moth - Trap Biofix
Biofix: Not established yet for 2026
Degree Days since March:105
Management Action 1 Week Ago:none
Present Management Action:April 21 to April 22 - Place pheromone monitoring traps in orchard before bloom to get biofix (first moth flight). Check traps daily until first moths are caught.
Management Action for the Next 3 Weeks:April 22 to April 29 - Place pheromone monitoring traps in orchard before bloom to get biofix (first moth flight). Check traps daily until first moths are caught.May 4 to May 9 - First moths expected in pheromone traps.
For a current Codling Moth - Trap Biofix summary click here.
Fire Blight
*This model only applies when trees are in bloom.
4-day Risk Value: 2
Blight potential for today and next two days:
For a current Fire Blight summary click here.
4-day Risk Value: 2
Blight potential for today and next two days:
| Condition | Today | Tomorrow | Next Day |
|---|---|---|---|
| If blight was in your orchard last year | LOW | LOW | LOW |
| If blight was only nearby last year | LOW | LOW | LOW |
| If no blight last year | LOW | LOW | LOW |
Greater Peachtree Borer
Biofix: January 1, 2026
Degree Days since Biofix:126
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Greater Peachtree Borer summary click here.
Obliquebanded Leafroller
Biofix: Not established yet for 2026
Degree Days since March:226
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Obliquebanded Leafroller summary click here.
Peach Twig Borer
Biofix: Not established yet for 2026
Degree Days since March:105
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Peach Twig Borer summary click here.
San Jose Scale
Biofix: Not established yet for 2026
Degree Days since March:95
Management Action 1 Week Ago:none
Present Management Action:April 19 - Place traps in orchard for biofix (first adult male flight)
Management Action for the Next 3 Weeks:none
For a current San Jose Scale summary click here.
Spotted Wing Drosophila
Biofix: January 1, 2026
Degree Days since Biofix:126
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Spotted Wing Drosophila summary click here.
Walnut Husk Fly
Biofix: January 1, 2026
Degree Days since Biofix:387
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Walnut Husk Fly summary click here.
Western Cherry Fruit Fly
Biofix: Not established yet for 2026
Degree Days since March:387
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Western Cherry Fruit Fly summary click here.
