Common Garden Pests and How to Control Them Without Harsh Sprays

By Priya Hollis · Published Sep 12, 2026 · 7 min read

In this guide

Aphids
Slugs and snails
Caterpillars
Spider mites
Build a garden that defends itself

Every garden has pests. A few holes in leaves are normal and rarely harm a healthy plant. The goal is to keep numbers low enough that the damage does not matter.

An approach that combines prevention, physical controls, and natural predators works better over time than reaching for a spray at the first sign of trouble.

Aphids

These small green, black, or grey insects cluster on new shoots and the undersides of leaves. A strong jet of water knocks many off. Ladybirds, lacewings, and hoverfly larvae eat them in large numbers, so avoid broad-spectrum insecticides that kill these helpers too. Insecticidal soap can be used for heavy infestations.

Slugs and snails

They feed at night and in damp weather, leaving ragged holes and slime trails. Go out with a torch after dark and remove them by hand. Water in the morning rather than the evening, and protect vulnerable seedlings with barriers or cloches. Beer traps sunk into the soil also catch many.

Caterpillars

Cabbage whites and other caterpillars can strip brassicas quickly. Fine insect mesh over crops prevents butterflies laying eggs. Check leaves regularly and remove eggs and caterpillars by hand.

Spider mites

Common indoors and in greenhouses in hot, dry conditions, spider mites cause fine speckling and webbing. Raise humidity, rinse plants regularly, and isolate infested houseplants so they do not spread.

Build a garden that defends itself

Long-term, these habits reduce pest problems:

Plant a mix of flowers to attract predatory insects and pollinators
Rotate vegetable crops so pests do not build up in the soil
Keep plants healthy with good soil, spacing, and watering — stressed plants attract pests
Encourage birds, frogs, and hedgehogs with water sources and shelter

This is general gardening information. Results depend on your climate, soil, and conditions. Follow label directions for any fertiliser or treatment, and check whether plants are toxic to pets or children before bringing them home.

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