- Most insecticides can be used on flowers to kill and control insects and pests, including aphids, bagworms, cutworms, thrips, Japanese beetles, leaf miners, mealy bugs, whiteflies, scale insects and crawlers. However, that does not apply for all insecticides, and the label should list the insects that a particular insecticide will kill.
- Most pesticides come in liquid form and are sprayed, although some can be bought in granular form. For insect spray, apply to the infected area as well as under the leaves and foliage at the first sight of insects. Many insecticides call for moderate temperatures of 50 to 70 degrees Fahrenheit, little to no wind, and should be applied in four to 14-day intervals. Make sure to read the label before application, as not all insecticides meet those exact specifications.
- Insecticide should not be sprayed directly into the eyes, inhaled or ingested, as they may cause irritation of the eyes, respiratory tract, and gastrointestinal tract due to toxic ingredients. If insecticide gets in the eyes, rinse with water for 15 to 20 minutes and then contact a poison control center or doctor. If inhaled or swallowed, call a poison control center or doctor immediately. Avoid induced vomiting unless directed to do so by a licensed expert.
- Storage of pesticides should be in a cool, dry, and preferably locked place, such as a storage shed. Make sure the storage room does not contain food, feed or a water supply, as contamination could take place.
If the container is empty, thoroughly wash out and dispose of the container through garbage or recycling. Do not reuse the container, according to the PBI/Gordon Corporation. If the container is partially filled, call your local solid waste agency for disposal instructions. Never pour unused insecticides down any indoor or outdoor drain. - Bayer Advanced Rose & Flower Insect Killer Ready-To-Use and Bug-No-More Multi-Purpose Ready Spray are just a couple concoctions of pesticides that can be used to treat insect infestations on flowers.
The Bayer product controls adelgids, box elder bugs, clover mites, elm leaf beetles, grasshoppers, gypsy moth larvae, lace bugs, leaf-feeding beetles, leaf-feeding caterpillars, mosquitoes, pill bugs, sawfly larvae and spittlebugs. The pesticide kills upon contact and should be reapplied every seven to 14 days.
Bug-No-More kills armyworms, cabbageworms, cicadas or locust, cutworms, fall cankerworms, fall webworms, fungus gnats, inchworms, leaf rollers, spring cankerworms, spider mites, rose chafer, and psyllids upon contact. Four to eight days are recommended between spray intervals.
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