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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:
- maintain high mowing heights on lawns
- sow seeds for biennials, such as Canterbury bells, wallflower, sweet William
- divide and replant iris
- prune climbing roses when flowers fade
- pinch chrysanthemums for last time by mid month
- no pruning or fertilizing woody plants after July 15
- apply imidacloprid or halofenozide for grub prevention in lawn, if needed
- start spraying early in month for powdery mildew, if needed
Things to Watch for This Month:
- heat and drought stress – overwatering may also be a problem
- deer tick nymph activity
- dog tick nymph peak activity
- Lone star tick nymph activity
- June, Japanese, Oriental and Asiatic garden beetle peak activity
- increasing yellowjacket and hornet activity
- cinch bug injury (continues in hot dry years)
- tomato fruit set problems in very hot weather
- first evidence of blossom end rot on tomatoes in dry years
- slime molds appear in mulch and turf
- stinkhorns and other fungi appear in mulch
- air pollution injury to plants
