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Some Algal Types Are Introduced
To Ponds Naturally
Since these are primitive, nonflowering plants, few homeowners would intemtionally introduce them into garden ponds. However, certain algal types require no conscious introduction, as birds frequently do that job. Standing water outdoors will always contain algae, and small garden ponds with high nutrient inputs may become overgrown with algae. You can control algae by introducing algae-eating fish and shading the surface of the water with plants.
Rooted water plants have true stems, roots, leaves, and flowers. They may be emergents, such as cattails, with most of their leaves, stems, and flowering parts exposed to the air; floating leaf plants, with only their leaves on the surface; or submerged, with their leaves, stems, and reproductive structures underwater.
Emergent plants, sometimes called marsh plants, grow above the water surface in shallow, shoreline areas of lakes, ponds, and slow-moving rivers. Although major portions of the plants are fully exposed to air, they are rooted in bottom sediments. Common emergents found in Virgina waters include cattail, arrowhead, pickerelweed, bulrush, rushes, bur reed, and smartweed. Some of these, such as the cattail and arrowhead or duck potato, produce edible plant materials that were an important food source to native Americans and are still consumed today.
Cattail flower spikes and leaves are dried and used in decorations.
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