How to Manage Slugs in the Vegetable Garden

If you grow your own vegetables, you will likely see at least a few pesky insects that want to feed on your plants.

One of the best ways to manage insects in your garden is to regularly scout for insects and other pests that may be causing harm. Slugs are one of the pests you may be noticing now.

While slugs are technically mollusks and not insects, they can still be annoying in your garden. Though they eat a wide variety of plants, they especially like leafy vegetables, such as lettuce. They will also feed on low-lying fruits, like strawberries.

During the day, you may notice the silvery trail they leave behind when they crawl over your plants. They rest during the day in moist, shaded areas, including under plant debris, and are active at night. They also prefer gardens that have organic mulches.

Natural controls include trapping and tilling any organic matter into the soil before planting. Beer traps work well in small-scale plantings, such as small, raised beds. Simply pour a little beer into a clean jar lid or empty tuna can and place it in the area. Another way to trap them is to place wet burlap bags in the garden in the late afternoon. The next morning, lift the bag and properly get rid of any slugs you find.

Alternatively, you can use metaldehyde or iron phosphate baits. Always be sure to read and follow the label directions. These baits should be applied only to the soil around plants. Be careful not to contaminate edible parts of the plant. When treating a raised-bed garden with these baits, apply on the outside of the bed only.

It is recommended to treat for slugs preventively. Don’t wait to treat until you have a heavy infestation.

For more information about managing pests in the vegetable garden, refer to Extension Publications 3616, “Mississippi Vegetable Gardener’s Guide” and 2347, “Insect Pests of the Home Vegetable Garden.”