Kathleen Cue, Nebraska Extension Horticulture Educator in Dodge County
Snails and slugs are noted for their voracious appetites, eating holes in the leaves of hosta (their preferred food) but also munching on roses, ferns, impatiens, begonias, and fruits, including strawberries and tomatoes. You may not see the actual snails and slugs themselves since they prefer to feed at night or on cloudy days, but if you see holes AND their silvery slime trails, these guys are making themselves at home. Typically, snails and slugs prefer to slime their way to the center of leaves where they will eat holes between leaf veins. Sometimes they eat their way inward from leaf edges.