- Step 1
The first, and most important step, is to identify the insect in question. Many bugs are in fact GOOD for your garden
! This is why it is a bad idea to spray with poisonous chemicals - they kill everything, not only the "bad" bugs. If in doubt, there are many internet databases which will help you identify insects. Your county extension may also be useful.
To be sure you have aphids - if leaves look puckered or wrinkly, look on underside of leaves. Aphids are very small (1/16-1/4 inch), pear-shaped, soft-bodied insects. They can be many colors, but are typically green or grayish. They can also be found on the stems of plants. They do not chew holes in leaves, but rather suck the sap of plants. - Step 2
One method of control for aphids is to encourage natural predators. Ladybugs, hoverflies, lacewings, and certain small wasps will usually control the aphids for you. If you do not spray your yard with pesticides, these predators should already be present. Plant a wide variety of flowers to keep attracting these good bugs to your garden.
- Step 3
If you do find that you have an intolerable amount of aphids, the next step is physical control. Since they are small, soft, and slow, you can just rub them off your plants with your fingers. They can also be hosed off the plants with a strong spray of plain water.
- Step 4
When beneficial insects and physical controls are not sufficient, you can use insecticidal soap. This is commercially available - be sure to follow directions. It is considered organic as it does not harm beneficial insects and does not persist in the environment. You must spray the aphids directly.
- Step 5
A good strategy for preventing aphid attacks is companion planting. Marigolds planted around vegetables and roses will keep aphids (and other pests) away. Many people also swear by garlic plants or other heavily scented herbs.
- Attracting beneficial insects and other predators to your garden is always the best way of controlling pests organically. Let nature do your work for you!
- Chemical pesticides kill good bugs along with your pests. The pests will return, but the good ones may not.
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