The healthiest gardens aren't pest-free — they're balanced. Before reaching for a spray, diagnose what's actually eating your plants. Most 'bug problems' are misread.
Identify before you act
Turn a leaf over. Is it aphids (soft, clustered, slow)? Spider mites (tiny, webbing underneath)? Caterpillars (chewed edges, frass)? Each calls for a different response, and the wrong one makes things worse by killing the beneficial insects doing the real work.
Is it really a problem?
A few holes in a leaf are normal. Damage below ~10% of foliage rarely reduces yield. Tolerate some pests: they are food for the ladybugs, lacewings, and parasitic wasps you want to stick around. A garden with zero pests has zero predators.
What actually works
- A strong jet of water dislodges aphids and mites. Repeat every few days.
- Insecticidal soap for soft-bodied pests (aphids, whitefly). Spray at dusk, never in sun.
- Bt (Bacillus thuringiensis) stops caterpillars on brassicas. Apply in the evening.
- Hand-picking tomato hornworms and slugs — drop into soapy water. Best done at dusk.
Prevent by planting smart
Mix families and interplant flowers — marigolds, alyssum, yarrow, dill — to draw in predators. Rotate crops so over-wintering pests don't find last year's dinner waiting. A stressed plant puts off volatiles pests home in on; consistent water and fertility keep plants quiet.
The worst mistake
Broad-spectrum sprays kill everything — good and bad — and leave a vacuum the pests fill faster than the good bugs can recover. Reach for them last, not first.
A few minutes of close looking each week replaces most of the pest-control aisle. Dovi can help you diagnose a leaf from a photo if you're unsure what you're looking at.