Brown Garden Snail

    Brown Garden Snail

    Cornu aspersum

    snail

    Adult garden snail (Joseph Berger, Bugwood.org)

    snail eggs

    Garden snail eggs (Chai, Wikimedia Commons)

    snails

    Overwintering garden snails (Roger Griffith, Wikimedia Commons)

    Pest Description

    • ~1 1/3 inches long; whorled brown shell with orangish, tan and black markings
    • immatures are smaller versions of the adults
    • eggs are round, pearly white and laid in the soil

    Host Plants, Diet & Damage

    • many; boxwood, rose, hibiscus, and peach commonly damaged
      primarily chew on the foliage of host plants
    • may cause minor damage to twigs and branches

    Biology, Life Cycle & Damaging Life Stage

    • overwinter within shell around plantings
    • become active in the spring, mate and lay eggs
    • snails take 2 to 3 years to reach maturity
    • mostly active at night
    • immatures and adults are damaging

    IPM Recommendations

    • Control is difficult; manage numbers below threshold.
    • Minimize soil moisture; increase time between watering.
    • Choose resistant plants.
    • Eliminate habitat that promotes protection and moisture.
    • Handpick snails from vegetation.
    • Use barriers such as copper strips.
    • Use baited and unbaited traps to catch and remove or kill snails.
    • Apply snail baits (iron phosphate; metaldehyde; sodium ferric EDTA; sulfur).

    For more information, see our Controlling Slugs and Snails in Utah fact sheet.