Marginal plants grow very near the surface and many can grow in moist soil or out of the water blending the water garden into the surroundings. They like heavy loam soil and come in all shapes and sizes. Combine low growing or creeping plants with others of height for a combination that looks natural and softens hard rock edges along the shore. Create masses of of bold colored foliage that compliment soft grassy leaved plants. Plant Floating Island Containers to provide shade and cover for Goldfish and Koi. They also help to deter Herons because they are unstable when landed on.