How do I prevent pests from damaging my sweet peas?

Sweet peas can be susceptible to pests such as aphids, slugs, and snails. To prevent damage, you can encourage natural predators such as ladybirds and lacewings by planting companion plants such as marigolds, dill, and fennel. You can also spray the plants with a solution of neem oil or insecticidal soap to control aphids. To deter slugs and snails, you can surround the plants with a barrier of crushed eggshells or copper tape. Be sure to check the plants regularly for signs of damage and treat as necessary.