How do you kill cutworms on hostas?
- Make plant collars.
- Hand pick.
- Sprinkle used coffee grounds or egg shells around your plants.
- Circle stems with diatomaceous earth, a natural powder made from ground up fossils which kills insects when they walk over it.
- Apply an insecticide late in the afternoon for best control.
Also, what can I put on my hostas to keep the bugs from eating them?
In a spray bottle, mix a solution of 2 cups water, 10 drops tea tree oil and 10 drops liquid dish detergent. Spray onto plant leaves, and repeat as necessary to keep insects from attacking your hostas.
Also, what do cutworms do to plants? Cutworms are frustrating pests in the garden. They are the larvae (in caterpillar form) of night-flying moths. While the moths themselves do no harm to crops, the larvae, called cutworms, destroy young plants by eating the stems at or near ground level.
Also to know, what insecticide kills cutworms?
Using pesticides If there is a severe problem, pesticide can be applied to the stems or leaves (for climbing cutworms). It is best to apply product in the evening, before the cutworms come out for feeding. Examples of common pesticides effective against cutworms are carbaryl, cyfluthrin and permethrin.
What is causing holes in my hosta leaves?
Slugs are the usual culprits for holes chewed in hosta leaves, although other pests or factors can also cause this damage. Slugs feeding on hostas leave a silvery trail of dried mucus.