Year-Round IPM Program Pages
This year-round IPM program covers the major pests of plums in California.
Fruit development (petal fall to harvest)
- Why is this period important in an IPM program?
- Special issues of concern related to water quality: runoff from irrigation, and drift.
What should you be doing during this time?
Survey weeds in late spring and keep records on a late-spring weed survey form .
- Continue checking pheromone traps.
- Keep records on a degree-day monitoring form .
- Treat if needed according to Plum Pest Management Guidelines.
Monitor omnivorous leafroller:
- Continue checking pheromone traps.
- Keep records on a degree-day monitoring form.
- Treat if needed according to Plum Pest Management Guidelines.
Put up peach twig borer pheromone traps.
- Keep records on a degree-day monitoring form .
- Treat if needed according to Plum Pest Management Guidelines.
Monitor aphids from petal fall until July 15, or until a treatment is applied.
- Keep records on a monitoring form .
- Treat if needed according to Plum Pest Management Guidelines.
Monitor webspinning spider mites weekly using a 5-minute search, starting June 1.
- Keep records on a monitoring form .
- Treat if needed according to Plum Pest Management Guidelines.
Continue monitoring codling moth if it has been a problem in the past.
Keep records of other pests you may see:
- Caterpillars
- Borers
- Katydids
- Diseases
- Birds
Treat if needed according to Plum Pest Management Guidelines.