How long does it take for saltwater to kill plants?

Answer 1

Saltwater with a heavy concentration of salt will wilt and kill most plants quickly, sometimes within an hour. Many people use it on things like poison oak and poison ivy. It is important not to get it on grass or plants because it will kill them also.

Answer 2

Saltwater can harm plants by causing dehydration and disrupting their ability to absorb nutrients. The time it takes for saltwater to kill plants depends on the concentration of salt in the water and the species of plant. In general, exposure to high levels of saltwater can lead to plant death relatively quickly, within days to weeks.