Extension > Garden > Diagnose a problem > What's wrong with my plant? > Annuals and Perennials > Cosmos > Malformed, cupped or distorted leaves
Cosmos > Leaves > Malformed, cupped or distorted leaves
1 of 1
Plant growth regulator herbicide injury
(2, 4-D, Dicamba, etc.)
- Leaves are twisted or distorted
- Twisting of stems and petioles
- Above ground root formation
- Side of the plant closest to the herbicide application is most severely affected
- Different species of plants in spray area will show similar symptoms
- More information on plant growth regulator herbicide injury
