If pest populations become extremely large, insecticides and fungicides may be the only answer--but they should be your last resort. Most are broad spectrum, which means they don't differentiate between the good guys and the bad guys. Beneficial insects such as ladybugs and lacewings are extremely susceptible to these poisons.
If you do apply insecticides, read the label carefully to determine the best time to apply the product and the proper rate of application. Use them in accordance with the product instructions. Always use safety attire, including goggles, chemical-resistant gloves, a long-sleeved shirt and long pants.
Dusting
A commonly used method of controlling insects on flowers, vegetables and roses, dusts are applied right out of the package.
- Apply only when the air is still or if wind is very light.
- The best time to dust is in the early morning or evening.
Sprays
- Test the sprayer each time you use it. Fill it with water, pump up the pressure and test to be sure the nozzle isn't plugged.
- Remove the lid, leaving the testing water in the tank.
- Measure the correct amount of insecticide according to label instructions. Never use measuring tools from your kitchen--designate a set of measuring tools that are used only in the garden.
- Tighten the lid and pump the handle to increase pressure in the tank.
- Spray plants, making sure to cover both sides of the leaves.
- Apply insecticides when the insects are feeding, usually early morning or early evening.
- Spray until the tank is empty. Don't leave any unused insecticide in the tank.
- Clean the empty tank over a dirt area so the remaining insecticide is absorbed into the soil. Never empty contents into a storm drain; it may harm fish and aquatic life.
To be effective, insecticides need to remain on a plant for a week. If it rains within seven days after you applied it, you'll need to repeat the application. Disease and pests are an inevitable part of any garden, but keeping your plants healthy can minimize those nuisances. Vigorous, rapidly growing plants often outgrow pest and disease damage. A healthy garden takes a good deal of work, but the results are well worth it.
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