A mixed, native hedge planted with hazel, hawthorn, wild roses and guelder rose is best for wildlife but all types will slow ...

During a torrential downpour, they all slow down and absorb some of the surplus water. This is important where all too many front gardens are covered in concrete and act as car parks. Our hedges ...

Michel Labrecque, head of research at the Montreal Botanical Garden, says willow trees absorb ... citizen to filter waste water, or up to 100 willows per person to absorb the water completely.