Snails and slugs are frequent visitors to gardens and orchards, and while their presence can be associated with positive symbols like tranquility and the value of home , an excessive number can jeopardize the health of your plants. These mollusks feed on leaves, stems, flowers, and fruit, leaving behind lackluster plants and decimated harvests. To maintain balance and protect your green space, it's essential to know how to prevent and eliminate snails from your garden or orchard naturally and effectively.
Why do snails and slugs appear in the garden?
The presence of humidity , frequent rain, abundant watering, and areas with shade and dense vegetation create a favorable environment for their proliferation. Snails and slugs prefer cool, damp environments, feeding especially on tender shoots and young leaves , which is why they tend to attack more intensely at night or in the early morning.
How to prevent the appearance of snails in the garden or orchard
Prevention is always the best strategy. The following recommendations will help you reduce your risk of infestation:
- Use drip irrigation: minimizes surface moisture and reduces the attractiveness of the surroundings.
- Choose drought-resistant plants: Species such as rosemary, sage or thyme not only require less water, but their aroma acts as a repellent.
- Increase biodiversity: encourages the presence of natural predators such as birds, frogs, hedgehogs, ducks, geese, and beetles. For more information on how to attract these predators, visit Guide to caring for your plants and attracting natural enemies.
- keep your garden clean: Remove vegetation debris, stones, wood and other potential hiding places for snails.
Natural methods to eliminate snails and slugs
If prevention has not been enough, there are numerous ecological alternatives to control any invasion without resorting to chemical pesticides:
- Manual method: During the night, collect the snails and slugs with the help of gloves and move them to a distant area with vegetation and humidity where they can survive without harming your plants.
- Physical barriers and repellents:
- Coarse saltSpread a thin layer around the plants. Use sparingly to avoid damaging the soil.
- Crushed eggshells: They form an uncomfortable barrier due to their sharp texture and also provide calcium to the substrate.
- Wood ashes and sand: They dry out and make it difficult for these mollusks to pass through.
- Copper strips: Upon contact, they cause small discharges that scare them away.
- Diatomaceous earth: Spread around affected plants, creating a barrier that is impossible to cross without damaging their skin.
- Ecological traps:
- Beer: Bury containers of beer at ground level near your plants. The aroma attracts them, and they fall into the trap. If you want to learn more about control tricks, visit How to get rid of pests in the garden.
- Fruit peelsMelon, watermelon, or banana act as natural bait. Leave them overnight and remove the snails in the morning.
- Wet rags or cardboard: Place them moist at night; in the morning you will find the mollusks hidden in them.
- Sacks or bags soaked in beerLeave these damp bags under a roof. Check daily and remove any accumulated snails.
- Homemade natural repellents:
- garlic infusion: Boil several cloves and spray the cooled liquid on the soil and plants. For more natural protection ideas, see How to eliminate soil bugs on plants.
- Coffee grounds: Sprinkling grounds around plants repels and feeds the soil.
- Walnut soap: Spraying a natural solution helps repel and clean at the same time.
- Fern extracts: The waste attracts and is toxic to slugs.
- Sulfur mixtures, agricultural lime or sulfur: They can be used with caution as a dry barrier in specific crops.
Plants that repel snails and slugs
- Sage
- Thyme
- Rosemary
- Wormwood
- Nasturtium
- bergenia
- Fern (quilting with its leaves)
These species can be planted among crops or along borders, acting as a natural and ornamental barrier. To learn how to enhance these plants, visit Primula vulgaris Care.
Using natural predators as allies
Encouraging the presence of animals that feed on snails is a sustainable and effective method. Among the main predators are wild birds, frogs, hedgehogs, shrews, carabidae beetles, ducks, geese, and chickens. You can create shelters for frogs and hedgehogs using piles of leaves or boards, as well as feeders to attract birds. Additionally, to easily protect your plants, you can also use plants that repel snails and slugs.
- Water bottles as protectors: Cut the base and neck and use them as a bell to protect young shoots from direct attack.
- Alternative green cover: Provide vegetated areas in walkways to distract snails and slugs, minimizing damage to main crops.
- Alternative baitsMilk, orange peels, cauliflower or potato leaves, wet bread, and newspapers soaked in water and sugar can be used in improvised traps.
