The insects are most active when temperatures are 65 to 80 degrees Fahrenheit. Look for groups of them massed on stems and the back of leaves. Most petunias have naturally sticky leaves, but aphids compound the problem by excreting gooey, undigested sap called honeydew.
How do I keep aphids off my petunias?
Provide your petunias with plenty of sunlight and proper amounts of water, as a healthy plant is less susceptible to damage by aphids. Avoid excessive fertilizer, as lush, new growth makes the plant more attractive to aphids. A time-release fertilizer that feeds the plant gradually is often helpful.
How do you get rid of aphids on petunias naturally?
Make a homemade insecticidal soap, a low-toxicity bug control solution that will desiccate the soft bodies and kill the aphids without doing harm to your plants. Simply mix a few teaspoons of liquid dish soap with one quart of water, then spray or wipe the solution onto the leaves, stems, and buds of the plant.
Are petunias prone to aphids?
Petunias a very prone to aphids infestation. They have a sticky foliage surface that aphids attach on and multiply.
Will soapy water kill my petunias?
Sun baking the wet soapy water into the foliage may damage the plants. Do not apply the soapy water to the petunia plants if the temperature is over 90 degrees F because the plants may suffer damage at high temperatures.
How do I get rid of bugs eating petunias?
Use diatomaceous earth as a broad spectrum insecticide to kill soft-bodied petunia pests like caterpillars, thrips, aphids, slugs and snails. It works by dehydrating the insect to the point of death. Apply diatomaceous earth to the foliage and soil.
What is making my petunias sticky?
When tiny insects get onto potato plants’ hairs, they become trapped. This commonly happens with aphids. Although aphids are among the most likely pests for petunias, petunias have something in common with them. The tiny bugs give off honeydew, which is sticky in its own right.
How do I kill aphids with Neem oil?
Apply these materials with a high volume of water, usually a 1 to 2% oil solution in water, and target the underside of leaves as well as the top. Soaps, neem oil, and horticultural oil kill only aphids present on the day they are sprayed, so applications may need to be repeated.