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Mercer County Horticultural Activities and Expectations
Click a month button above to view a list of possible problems you might find in your home, landscape or garden during that month and also see a list of suggested “To Do” items:
Things to Do This Month:
- Turf
- begin process for lawn renovation
- control weeds, selective or non-selective, for renovation – early to mid month
- seeding (late)
- fertilize zoysia grass for last time
- control grubs (mid to late month for most products, including Dylox)
– apply imidacloprid only up to August 15th - watch for sod webworm injury to turf
- watch for chinch bug injury that becomes evident in hot dry weather
- plant lettuce, spinach for fall crop
- finish replanting iris
- control poison ivy
- control crickets and grasshoppers
Things to Watch for This Month:
- peak activity in dog tick nymphs, activity for deer tick nymphs and lone star tick larvae
- growing yellowjacket and hornet populations – may become noticeably agressive
- cicadas and cicada killers wasps
- peak scoliid (digger) wasp activity
- hummingbird (hawk) moths on flowers
- spider activity
- air pollution (esp. ozone) injury to plants
- powdery mildew on some ornamentals
- nutrient deficiencies noticeable on underfertilized annual flowers and vegetables
- partial defoliation of trees damaged by spring-onset leaf spotting diseases
- bud set occurs on spring blooming woody plants