Stephen from Marblehead writes
The plants are dry for maybe 8 hours.
The aquatic weed control products that we carry are not labeled for tidal area applications except Cattplex as it is a glyphosate herbicide labeled for eradicating beach grass. Schedule applications in order to allow 6 hours before treated plants are covered by tidewater. Rainfall or immersion within 6 hours after application may reduce effectiveness.
Answer last updated on: 05/09/2017