• When aphids first arrive on your plants use a strong spray of water to dislodge them. Many will not find their way back to the plant.
• Neem oil is another organic pesticide that works well for both killing and preventing aphids. Spray the leaves of your plants following the directions on the bottle. Make sure to get under the leaves where aphids hide.
• Insecticidal soap is a cheap option for killing aphids too. Spray the leaves remembering to get the undersides as it has to contact the aphids to work.
• Diatomaceous earth works well to kill many insects including aphids. Try applying it as a liquid so that it’s easier to get under the leaves. Once it dries it will be effective.

How To Prevent Aphids

• Water your plants constantly. Plants that are stressed for water are more likely to have aphid damage.
• You can kill aphid eggs before they hatch by applying a horticultural oil on trees and shrubs to kill overwintering eggs.
• Encourage beneficial insects such as ladybugs, lacewings and parasitic wasps in your garden by planting flowers and herbs that attract them.
• Use companion planting to help prevent aphids. Plant herbs such as catnip, chives, dill, fennel, and cilantro or vegetables such as garlic and leaks to repel aphids from plants. Marigolds help too and look very pretty in your vegetable garden.
• You can try using trap crops such as nasturtiums one of their favourite flowers to feed on in a corner of your garden to lour them away from your other plants.