Garden Pest and Plant Disease Listing - EU
EUROPEAN BROWN SNAIL: This is a serious pest of citrus trees in most of California. The brown snail feeds on foliage and sometimes fruit. You can keep them out of the trees by wrapping copper barriers around the trunks (snails won't cross copper). You can also reduce snail populations in your garden by getting rid of their hiding spots on the ground, such as boards, stones, debris, mulch, and weeds. You can also try handpicking at night, or trapping them under boards or flower pots. In certain parts of California (mostly in the south), gardeners release decollate snails, which feed on European brown snails, but usually not on citrus. (Check with your county extension agent to see if these snails can be used in your area.)
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