The Environment Department has issued the plea as each year a number of hedgehogs have to be put down having suffered severe wounds from cutting equipment.
Under the Branchage Law, landowners must ensure there is clearance of 12 ft over main roads and by-roads, and eight feet over footpaths.
They must also clear all trimmings from the road or footpath. Anyone who fails to comply with the law can be fined up to £100.
Anyone who finds an injured hedgehog is urged to pick it up with gloves, put it in a bucket or box and ring the Jersey Hedgehog Group on 734340, or take it to a vet and Islanders who discover other injured wildlife should call the JSPCA on 724331.
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