Common Garden Pests: Know Your Enemy
Pests are an inevitable part of gardening. The goal is not elimination — that is impossible and undesirable — but management. Understanding each pest's lifecycle, preferences, and natural enemies lets you keep populations below damaging levels without resorting to broad-spectrum pesticides.
Slugs and Snails
The top pest in moist climates. They feed at night, leaving ragged holes and slime trails. Management:
- Beer traps (shallow dishes filled with beer) attract and drown slugs
- Copper tape around raised beds creates a barrier
- Iron phosphate pellets (Sluggo) are safe around pets and wildlife
- Water in the morning so soil dries by nightfall — slugs prefer damp conditions
- Encourage ground beetles, frogs, and toads — they eat slugs voraciously
Aphids
Tiny sap-sucking insects that cluster on new growth. Usually green, but also black, white, or pink. A strong spray of water dislodges most aphids. Encourage ladybugs and lacewings. Severe infestations respond to neem oil or insecticidal soap. Check the undersides of leaves — that is where they hide.
Caterpillars
Cabbage white butterfly caterpillars devastate brassicas. Row covers prevent the adults from laying eggs on your plants — the most effective control. For existing infestations, hand-pick caterpillars daily (check the undersides of leaves). Bacillus thuringiensis (Bt) is an organic-approved spray that targets caterpillars specifically.
Flea Beetles
Tiny jumping beetles that riddle leaves with small round holes, especially on brassicas and eggplant. Row covers are the best prevention. Trap crops of radishes or mustard greens lure them away from prized plants. Neem oil provides some control.
The Big Picture
A diverse garden with flowers, healthy soil, and minimal chemical use develops a natural balance over time. After 2-3 years of organic management, most gardeners find pest pressure decreases as beneficial insect populations establish.
Log pest sightings and control measures in Seedtojar to track patterns and improve your management over seasons.