Antirrhinums, or snapdragons, are generally a less-susceptible choice for slug-prone gardens, but no planting should be treated as immune to damage. The RHS includes Antirrhinum majus among plants less susceptible to slugs and snails. Calling snapdragons a favorite slug food, or naming particular cultivars as slug-proof without evidence, is misleading.
Confirm what is eating the plant
Inspect fresh damage after dusk or in damp conditions. Look beneath leaves, around the pot and near the plant base for the animal responsible. A slime trail supports a slug or snail explanation, but missing flowers or holes alone do not establish the cause.
UC IPM notes that other chewing pests can cause similar damage. Photograph the marks and any animal seen feeding. If shoots are wilting without feeding evidence, also check moisture and plant health before selecting a pest control.
Protect small plants while they establish
Monitor young transplants more closely than an established flowering clump. Give plants appropriate light, drainage and room rather than crowding them into a damp corner. Remove unnecessary debris immediately beside vulnerable plants, while keeping useful habitat elsewhere in the garden.
Check beneath containers and nursery trays. A raised bed or pot does not exclude slugs by itself. If repeated losses occur, establish sturdier plants in a monitored location before planting out and reassess where the problem is concentrated.
Do not rely on a ring of kitchen materials
Eggshells, coffee grounds, rough mulch and scented companion plants are not dependable exclusion barriers. RHS research found no reduction in damage from several commonly promoted barriers in garden-like conditions. Copper tape should not be promised as protection that slugs cannot cross.
Do not add salt to the planting soil or assume a homemade spray is harmless because it uses household ingredients. Avoid routine treatment when plants are undamaged; the aim is to protect a vulnerable planting, not eliminate every slug in the garden.
Use targeted management when damage warrants it
Inspect regularly and remove feeding slugs with gloves or a tool where practical. Do not move them to someone else’s garden or release nonnative animals elsewhere. For persistent problems, use local gardening advice to select an appropriate method.
If considering a slug-control product, check its current authorization and label for your country, site and plants. Follow placement and application directions, especially around children and pets. “Organic” does not mean that exposure or effects on other wildlife can be ignored.
Watch the remaining growth
Protect healthy shoots and maintain suitable watering after damage. Avoid trying to force recovery with extra fertilizer. Whether a plant recovers depends on the remaining living tissue and growing season.
Keep a brief record of new damage and what you observed. If no slug is found and losses continue, seek identification help instead of repeating the same treatment. Snapdragons can remain a sensible choice in a slug-prone garden without a promise that every individual plant will be untouched.
