Sod webworms start out as small whitish moths that hover over the lawn in spring and summer, where they eventually lay their eggs that will transform into larvae. These larvae feed on grass roots and stems. Damage appears in the form of irregular brownish patches on the lawn’s surface. These patches of grass lift away from the soil easily because the roots have been eaten and they no longer anchor the turf to the soil. The moths usually appear from the end of September through to the end of October. The larvae can destroy a lawn completely within a very short period. Be careful not to confuse the damage with that of the white grub, since the two are very similar.
As a preventive measure to protect against possible infestation if there is a presence in your neighbourhood, or as a treatment to remedy a problem already present on your lawn, a treatment for sod webworms is strongly recommended.


  • Choose one of our fertilization programs, which will keep your lawn dense and healthy.
  • Keep your lawn height at a minimum of 3 to 3.5 inches.
  • Check for the presence of small white moths on the surface of the lawn during the summer.