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Grub Worm Control in Lawn and Around Crepe Myrtles

Context

Low grub populations normal. Horse manure may attract. Species: Japanese beetle, June beetles, chafers, etc.

Treatment Threshold

Preventive pesticides not recommended unless history of damage or adult activity seen.

Effective Products

  • Imidacloprid (Merit)
  • Isofenphos (Oftanol)
  • Isazophos (Triumph)

Apply before mid-August (egg-laying period). Imidacloprid and isofenphos perform best.

Key Takeaway

Treat grubs only if damage confirmed or high risk. Timing (pre-August) and product choice (imidacloprid) are critical.

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