Last season we started working on a one acre patch of Nasturtium that had jumped the neighbors fence and is slowly taking over the understory of a beautiful oak woodland. Nasturtium is very easy to control with hand removal, even though it is a prolific seeder.
Our volunteer stewardship team planted over 600 plants in tight planting clusters and cleared five 3 meter by 3 meter experimental plots. In the small plots, we will remove Nasturtium and any other non-native plants and monitor what comes up on it's own for the next two seasons. This will help me to know if we can ease up on planting and perhaps just control the invasive species, at least in part of the site.
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