A certified organic herbicide consisting of naturally occuring fatty acids extracted from plants. Finalsan has a scorching action for controlling annual weeds, moss and algae with results evident within hours after application. Soft on the environment. Organically certified for NOP farming standards.

Mode of Action

Finalsan® is a non-selective contact herbicide. The active agent of Finalsan® - pelargonic acid - penetrates the wax layer (cuticle) of the leaves. The lipophile part of the fatty acid then destroys the cell membranes of the plant's epidermic cells - the outer skin - there­ by inducing the rapid release of the substances contained in the cells so that the plant quickly dries up.

  • Effective moss and algae control on open surfaces
  • Rapid decomposition in the soil
  • Can be applied throughout the entire vegetation period

Finalsan® is applied by spraying. Intensive weed spraying must be assured since only the directly wetted plant parts die. An optimal effect is assured when the weeds are 5 to 10 cm tall. The weeds should be dry when they are sprayed because, otherwise, the active agent will be diluted. With root-stock weeds it is advisable to repeat treatment after 4 to 6 weeks.


Finalsan® is a total herbicide that kills all con­tacted green plant parts. Consequently, do not allow the agent to come into contact with the leaves of crop plants. Woody plant parts are not damaged so that Finalsan® can be applied under trees and shrubs without causing any problems. The agent is not translocated via green or brown bark parts of trees or shrubs.


Store in a cool, dry place in the original sealed container.