Lucas from Freeland Washington writes
SedgeHammer Plus Herbicide is labeled for horsetail, however it is only labeled to be applied on turf. Diquat Water Weed and Landscape Herbicide will kill horsetail. Horsetail is very hard to control and it can be tough to properly penetrate through the plant. When using the Diquat you will need to mix it at the rate of 2- 4 oz per gallon of water and mix it with an 80% Non ionic surfactant.
Answer last updated on: 07/08/2021
