Press-Republican

Lifestyles

February 3, 2014

Prevent a garden slugfest with baits, upkeep

Slugs and snails are ravenous plant eaters that leave behind slimy trails of destruction as they glide through nurseries and lawns, farm fields and gardens.

Remedies abound, but prevention is an effective way to start.

“Remove any debris from the garden,” said James Dill, a pest management specialist with University of Maine Extension. “Straw, boards, leaves and stuff like that. They provide the perfect hiding places for slugs in the daytime. Then they come out at night and do their damaging thing.”

Slugs are essentially snails without shells, Dill said. “Sizes and colors are all over the map but both can be very destructive.”

Slugs and snails prefer feeding on soft-leaved plants, although they will eat whatever is available.

“Three or four years ago I would have said strawberries, hostas and leaves,” Dill said. “But when you see the damage (done) to potatoes or tubers, you realize they can rasp on anything.”

Maine had a wet summer last year and slugs hit the state’s potato crop hard. “Commercial growers reported 6 to 7 percent of their crop was damaged,” Dill said.

Slugs prefer cool, rainy climates where they won’t dry out. Snails, which can find relief from the heat by withdrawing into their shells, are more adapted to dry climates.

Effective snail and slug management calls for a combination of garden upkeep and trapping. As for the most commonly used homemade baits, however, put away the saltshakers and leave the beer in a cooler, said Robin Rosetta, an entomologist with the Oregon State University Extension Service.

“Table salt can dry up the mollusks but it also can build in the soil over time, damaging plants,” she said. “Fermented sugar water and yeast is cheaper than beer-baited traps and just as functional for drowning slugs.”

Commercial baits are toxic to snails and slugs, but some varieties — especially those containing metaldehyde — can be harmful to children and pets.

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