Poinsettia Solutions PGR Solutions Insect Solutions Disease Solutions Quick Ref. Guide

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Plant injury is caused only by the larval (worm) stages. Larvae are chewing insects and can eat entire leaves and flowers, bore into stems and roll/tie leaves. Nearly all parts of the plant can be infested. Cutworm larvae may be in the growing media or beneath pots.

Lepidoptera developmental stages are egg, larva (number of instars depends on the species), pupa, adult (moth). Development from egg to adult is about 30 days, but varies depending upon the species and temperature. Plants high in nitrogen may be more heavily damaged.

Discus™ – Nursery Insecticide
Apply 50 fluid ounces per 100 gallons as a foliar spray.

Azatin® XL – Insect Growth Regulator
Apply 10 to 16 fluid ounces per 100 gallons to target the larvae. Tank mix with Decathlon 20WP to improve larval control and target adults. The pH of the spray solution should be maintained between 3 and 7. For best results use a spray adjuvant. Repeat applications at 5 to 7 day intervals.

Decathlon™ 20 WP – Synthetic Pyrethroid
Apply 1.9 ounces (54 grams) per 100 gallons to target larvae and adults. Tank mix with Azatin XL insect growth regulator to improve larval control. Repeat applications at 5 to 7 day intervals.

Deliver® – Biological Insecticide
Apply 0.25 – 1.5 pounds per 100 gallons as a foliar spray. Apply when most larvae are in the 3rd–4th instar. Repeat in 14 days if necessary.