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Roadside Weed Sprays
I'm interested in obtaining non-toxic weed sprays. I read on your site that you don't know of any organic sprays for gorse, but what about less hardy weeds, like common roadside ones. Any ideas on what can be used for around waterways, and roadsides. I'm looking into it for a contracting firm.
Thanks for helping.
Very tricky. Most 'organic' sprays are either not acceptable to BioGro, Demeter etc because they are too toxic or (if permissible) are not very effective, at least not long term. There are some fatty acid based products available, but in my experience the
effect is short-lived and the products are not endorsed by the organic standards.
The best way seems still to be mechanical control, mulching, and heat (flame
weeder, and steam weeder e.g. Waipuna).