A bog garden contains permanently moist soil and allows you to grow plants that are well-adapted to such conditions. Bog gardens associate well with water features, helping to integrate them into the wider garden. They can also make an attractively lush feature in their own right. Mid spring is an ideal time to make a new bog garden.
Using flexible liner when you create your garden pond is easier to extend the excavation to create a depression of 45 cm deep for an adjacent bog garden. Buy a piece of liner that is large enough to cover both areas and lay it on a bad of sand. The piece of liner that is covering the bog garden needs to be perforated with few holes and lined with a layer of gravel of 5 cm deep to provide a good drainage.