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MERCER COUNTY HORTICULTURAL ACTIVITIES

AND EXPECTATIONS FOR

May

FROST-FREE DATE ABOUT MAY 10

Things to Do This Month:   Things to Watch for This Month:
  • watch for explosion of insects in yard
  • plant warm weather vegetables and annuals, generally after Mother's Day
  • plant summer blooming bulbs (early to mid)
  • plant snap beans
  • check for European pine sawfly emergence (early)
  • apply broadleaf weed control on lawns if needed
  • apply post-emergence crabgrass control if needed
  • apply birch leaf miner control if needed
  • apply gypsy moth control if needed
  • apply imidacloprid or halofenozide for grub prevention if needed (late)
 
  • deer tick nymph peak activity (late May into early June)
  • Lone star tick nymph peak activity (May into July)
  • dog tick larval peak activity (May into June). adult peak activity (May)
  • annual bluegrass (turf weed) in seed
  • March fly activity
  • carpenter bees
  • Andrenid ground nesting bees

 

   = Best Time for this!                        = Most likely occurrence

Helpline Number: 609-989-6853