Aquatic plants, unlike most other garden plants, actually do very well in heavy soil. Soil with a high clay content is recommended. A potting soil high in organic matter is not recommended because it will float out of the container and does not anchor the plant roots very well.
And
Land plants are the kind of plants that get the nutrients they need to survive both from the air and the soil. These plants can't survive if immersed or submerged in water as they'll become waterlogged and die.
