How can I get rid of the caterpillars that are eating my petunias?

Bacillus thuringiensis usually written as Bt. You will see Bt somewhere on the label and the spray usually says something about caterpillar control. Bt forms a toxin in the gut of the caterpillar when they eat a leaf or flowers that has been sprayed. That stops the feeding ability and in a day or so the caterpillar is dead. Spinosad is the other popular spray. It is also a non-poisonous biological but it has a broader effect. You not only get caterpillars, but thrips and leaf miners and a few other insects also. Both are totally safe to use. Safer caterpillar control and Greenlight Bt or Spinosad are two well known brands. To be effective you need to spray on a regular weekly or bi-weekly schedule.





If it is your first spray, then spray the entire plant. Remember on these types of control the caterpillars have to eat some of the plant that has been sprayed. These are not contact insecticides that will make your caterpillars curl up and die right under your nose. Once the caterpillar eats a bit of the spray the toxin forms in the gut and the eating process stops. The sprays do not remain effective for many days so at the height of the caterpillar season you need to spray often.


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How can I get rid of the caterpillars that are eating my petunias?
Sevendust works great for these.
Reply:go with the answer A Well Lit Gardner

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