Bogs are areas of wetland which are marsh-like and contain large amounts of decomposed organic matter. Bog plants live in these condition and are classified as ‘marginal plants’, which means that the plants can be found floating on the surface of water or surrounding the shallow periphery of rivers or lakes. Some universally popular kinds of bog plants are:

Beautiful waterlily. (cc) publik_Oberberg
Water Lotus
This is a beautiful flowering plant which floats on the water. Its colors range from white to lavender and a combination of both. The roots are tuberous that grow best in shallow water. Lotus plants provide shade and shelter for fish.
Water Iris
This plant can either be planted in shallow water or in the ground on land. To survive on land this plant needs a lot of water. The leaves are flat and long, some growing to six feet. The flower is a stunning shade of purple. Its roots spread and multiply by dividing off. If the roots are confined the plant will suffer so always make sure the plant has plenty of room to spread.
Water lilies
These are similar to the Lotus plant as they too float. Its leaves are circular and the flowers come in a huge variety of lovely colors. However, unlike the Lotus, the Water Lily only grows in very deep water and never grow on land.
Rushes
These are brilliant for concealing liners and equipment and also are fantastic backdrop plants. Their roots need a lot of room if they are to grow tall and can reach over two feet if their roots are allowed to spread. They have small flowers that are white or purple.
Water Lettuce and Duckweed are generally unsuitable for use as pond plants. They are considered a nuisance and are banned by many authorities. These plants soon multiply and will kill off any life forms in the pond as they drastically eliminate the oxygen supply. In only a few days ponds can be totally infested and overwhelmed by these plants, killing all life underneath.