What is the best pesticide for scale insects?

What is the best pesticide for scale insects?

Emulsifiable concentrate (EC) sprays are preferred . Summer oils can be used alone or in combination with other insecticides. When scales are on plants that are actively growing, apply systemic insecticides such as imidacloprid around the base of scale-infested trees , shrubs or potted plants.

How do I get rid of armored scale insects?

Horticultural oil is the very best way to destroy armored scale while preserving the predators that will readily feed on their young during the mobile “crawler” stage. Ideally, timing your application with the emergence of crawlers from their mothers’ covers will eliminate an entire generation all at once.

Does soapy water get rid of scale insects?

Young scale insects can usually be controlled with a spray of soapy water. Use mild dishwashing liquid that doesn’t contain fragrance or other additives. Mix 2 teaspoonfuls with 1 gallon of room-temperature water. Use a spray bottle to spray the soapy water and coat the leaves and stems thoroughly.

When should you spray for scale?

Spraying your plants with horticultural oil is effective in late spring just before the leaves unfurl. Scale insects can overwinter as nymphs or eggs tucked away in tree bark. Spray your plants at this point using a hose-end sprayer or garden sprayer filled with 2 to 5 ounces of oil per gallon of water.

How do plants get scale insects?

Scale on your indoor plants can appear seemingly out of nowhere, but these little insects can come from several sources. Perhaps you used contaminated potting soil, left your plants outside in the warm weather months, or reused a dirty plant pot.

How long does it take to get rid of scale on plants?

3 weeks
If you suspect your plant is infested, quarantine the plant to prevent scale from spreading. Keep the affected plant away from other plants for a minimum of 3 weeks.

How do you control scale insects on outdoor plants?


  1. To get rid of scale insects prune and dispose of infested branches, twigs and leaves.
  2. When scale numbers are low they may be rubbed or picked off of plants by hand.
  3. Dabbing individual pests with an alcohol-soaked cotton swab or neem-based leaf shine will also work when infestations are light.

How do you stop scale on plants?


  1. Monitor: Since no insecticide is effective once the soft or hard shell has formed, monitor your plants for the presence of scale.
  2. Use water:
  3. Prune branches:
  4. Use natural predators:
  5. Apply horticultural oil:
  6. Use insecticidal soap:
  7. Keep it organic:
  8. Keep plants healthy:

Can scale jump to other plants?

Scale insects can infest and damage many of the plants we grow in our landscapes and indoors. They feed on the sap of plants, and a large enough population can weaken a plant, damage it or even kill it. Scale can be difficult to detect.

Does scale live in the soil?

Preventing Future Scale Insect Infestations Scale can hide in the soil of a houseplant, so if you have by recurring infestations, try carefuly removing the top inch of dirt from the pot and replacing it with fresh potting soil.