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We know that verges are under considerable pressure. Priorities for safety and access, along with budget constraints and difficulties with the collection of litter and grass clippings all mean that enhancing their wildlife value is often low on the list. But we believe that the adoption of a few basic principles can significantly improve the biodiversity on our verges, bringing benefits for wildlife, for us and for future generations.
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http://www.plantlife.org.uk/application/files/4614/8232/2916/Road_verge_guide_17_6.pdf