Adding a pond can help to create a feeling of tranquillity to the garden and also provides the opportunity to grow a variety of different plants and attract a wide range of wildlife.

Informal sunken ponds are often designed to form a naturalistic feature. They are usually shaped in an irregular curve with stones or turf forming the border, linking it to the rest of the garden. Moisture-loving and marginal plants around the pond are positioned to soften or hide the edges.

Raised or sunken formal ponds tend to form a much bolder design statement; often square or rectangular in shape with an edging that is usually intended to be seen, rather than hidden by planting. They may be used to create a focal point, and are often positioned in a central part of the garden or so that they can be seen easily from the house. A fountain can be an attractive and spectacular addition.

When planning any style of pond, try to position it in an open, sunny position, away from overhanging trees that will drop their leaves into the water. You will seriously limit the range of plants that you can grow in the pond if it is sited in a very exposed position or in a frost pocket. In areas prone to flood, check that there is no danger of pesticide or fertilizer residues leaching into the pond as this will be harmful to plants, fish and other wildlife.

Pools may be built using flexible liners, rigid preformed liners and for more formal ponds, concrete. In this section, we'll take you through each step of installing your pond, whichever form of liner you use.