Beneficial Nematodes for Grub Control

Indications of Grubs in your lawn:

• Dead patches of grass
• Skunks & raccoons digging up your lawn
• Increased activity of birds on lawn

Grubs start feeding in April & again in August. Lawn grubs are the larval stage of June bugs, Japanese beetles, European Chafer, Crane Fly etc.

Beneficial nematodes are living organisms – natural parasites used to control grubs. They are microscopic worms that move through water to seek the insect host & release its bacteria into the host to kill it. Apply in fall from August to October to eliminate new grubs that have hatched in the summer. A second application can be done the following spring to ensure effectiveness.

Important Tips for Successful Control

• Nematodes need to remain refrigerated until ready to use (They have 15 min. to get from our fridge to your fridge so they don’t die).
• Before you start, ensure that your lawn is moist 2-3” deep.
• Soil temperatures must be between 10° – 28° Celsius.
• Apply to a wet lawn, at dusk or on a cloudy day. Do not apply in sunny weather.
• Adequate soil moisture is essential for the nematodes to successfully reach the grubs to be effective. You must water the lawn 3” deep after application for 7 consecutive days.
• Follow package directions & use before expiry date.
• One package of LAWN GUARDIAN covers 2,000-3,000 sq. ft.
• One package of Guardian for Leatherjackets/Crane fly covers 528 sq. ft. in spring.