Wild flower seed collections and dry stone wall building are included in a volunteer team's summer projects.
Lincolnshire Conservation Group will continue its work across the county with three more dates confirmed over the next six weeks.
Members will head to Rauceby Warren, near Sleaford, on Sunday, July 22, to reconstruct the stone boundary of the Lincolnshire Wildlife Trust reserve.
They will then travel to Hartsholme Country Park in Lincoln on Sunday, August 5, to help clear overgrown plants.
This will include rhododendrons and birch trees from the Swanholme Lakes Local Nature Reserve in a restoration of its heathland.
People will then harvest wildflower seeds at the Red Hill Nature Reserve on Sunday, August 19.