The swamp
One of the most interesting biotopes is the peat swamp which can be used to cultivate a few orchids and almost all carnivourous plants. It's basically a modification of the lake with a few differences. First, the acidic biotope prevents the use of clay or concrete. Use foil or sandstone slabs to isolate the hole at least partially. If the surrounding earth is alcalic or too nutritive, you must make precautions to prevent that water from the outside spoils the peat. Unlike the lake, the swamp bed belongs to the high parts of the territory. When you have prepared the shell, fill it with peat and water it profusely (rain water!). In big swamps, a few sandstone rocks which can be used as stepping stones may be a good idea. It may be nice to have a small brown-water lake in the center of the swamp. A bucket inlaid into the peat can become a nice biotope which can hold aquatic carnivourous plants like Utricularia. The color picture of this chapter shows the blossoms of the american Calopogon tuberosus combined with carnivourous Sarracenia plants, a very beautiful composition.