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Eastern Idaho Pest Alert Summary June 20, 2025 | Volume 6, Issue 6
All Crops Eastern Idaho, Magic Valley
Eastern Idaho Pest Alert
Posted on: June 27, 2025 by Jemila Chellappa
Eastern Idaho Pest Alert June 20, 2025 | Volume 6, Issue 6
Coverage: Bannock, Bingham, Bonneville, Cassia, Fremont, Jefferson, Madison, Power, and Teton Counties
Prepared by: University of Idaho Extension, Bonneville County
Editor: Ron Patterson
Featured Pest Alerts
Raspberry Crown Borer (Pennisetia marginata)
- Pest Type: Clear-winged moth
- Damage: Larvae bore into crowns/roots, causing cane wilt, stunting, and reduced yield.
- IPM Tips:
- Remove infested canes in late summer/fall
- Eliminate nearby wild brambles
- Encourage plant vigor through irrigation
- Nighttime insecticide sprays can help
Pollinator Spotlight – Golden-Haired Flower Longhorn Beetle
- Species: Lepturobosca chrysocoma
- Role: Beneficial pollinator and wood decomposer
- Habitat: Flowers in meadows and forest edges
- Conservation Tips:
- Plant native wildflowers
- Avoid broad-spectrum insecticides
- Leave some deadwood for larval habitat
Fire Blight in Apples and Pears
- Symptoms: Blackened shoots, “burned” look after bloom
- Management:
- Prune infected shoots on dry days
- Disinfect tools between cuts
- Apply copper or antibiotics before/after rain or dew
- Note: Only spray if blossoms are still open
Codling Moth – 1st & 2nd Generation Spray Timing
- Crops at Risk: Apples, pears
- Egg Hatch Periods:
- June 9–30: Burley, Preston
- June 12–July 3: Idaho Falls, Blackfoot
- July 2: Driggs (2nd gen)
- Backyard & Commercial Tips:
- Use insecticides or oils at night for best control
- Follow region-specific timing tables
- Rotate products between generations
UPCOMING HOME GARDEN TIPS WEBINARS
View full schedule in the attached PDF
More Information Contact:
Lena Allen
Horticulture Secretary
University of Idaho
Bonneville County Extension
208.529.1390
1542 E 73rd S
Idaho Falls, ID 83404
» Pest_Alert_June_20_GoldenHaired_Flower_Longhorn_Beetle,_raspberry_crown_borer.pdf