Question

how do underwater plants help to keep the water clean​

Answer 1

Answer:

Aquatic plant play an important role in maintaining a healthy water garden or pond

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Answer 2

Aquatic plants play an important role in maintaining a healthy water garden or pond. They not only absorb carbon dioxide and release oxygen into the water, improving the environment for fish, but absorb nutrients from the water as well. This reduction in nutrients results in clearer water and less algae. Use a variety of plants, including flowering and grass-type plants along the edges, a few floating plants and two or three dozen bunches of submerged plants.

Golden cannas (Canna flaccida), some canna hybrids and lanceleaf frogfruit (Phyla lanceolata) are efficient nutrient-removing aquatic plants that bloom from spring through fall. Golden cannas are hardy in U.S. Department of Agriculture plant hardiness zones 8 to 11. They grow to 4 feet tall with large, paddle-shaped leaves. The “Bengal Tiger” canna hybrid (Canna x generalis “Bengal Tiger”) is hardy in USDA zones 8 to 12 and grows to 5 feet tall. Its leaves have pale yellow or creamy white stripes and its flowers are bright orange. Both of these cannas grow along the muddy shore or in water up to 6 inches deep. Lanceleaf frogfruit (Phyla lanceolata) grows naturally in wetlands throughout California and most of the United States. It grows on the shoreline or in water up to 3 inches deep to a height of 2 feet and produces clusters of small pale pink or white flowers.