Slugs and snails: how to spot, prevent and treat them pest
How do you spot slugs and snails?
Holes appear in the middle of the leaf rather than along the edge, young plants are eaten down to the ground, and there are slimy trails in the morning. On low-growing fruit there are gnawed pits.
On a particular plant
hosta: On hostas an eaten leaf stays visible all season, because no new one comes.
How do you prevent slugs and snails?
Remove the hiding places beside the bed: boards, stones, dense weeds. Water in the morning and not in the evening, so that the night is dry. Spread a band of coarse sand or gravel around the bed. Cover young plants with fleece. Pick them off at night, which is still the most effective measure.
On a particular plant
hosta: Varieties with a thicker leaf are noticeably less eaten.
What works against slugs and snails?
Baits with iron phosphate are held to carry less risk for pets and children. Put them out in bands beside the bed, not scattered over the whole surface.
Check the registration and the label before use.
Which plants get slugs and snails? 30
Vegetables 10
Herbs 4
Berries 1
Ornamentals 15
Sources: Royal Horticultural Society, University of Maryland Extension, University of Wisconsin-Madison Division of Extension
Checked on 28 August 2026.