A quick guide to pond plants
Marginal or bog plants: These plants grow in soil, usually from pots, that are covered by several centimeters of water. They grow along the edges of ponds. e.g. iris, marsh marigold, cattails, bog bean, water plantain and arrowhead.
Deep-Water: These plants are placed in deeper water, usually 12 inches deep, rooted in their soil containers. Leaves and flowers grow on or above the pond’s surface. e.g. water lily and lotus.
Floating: Plants that float on top of the water and do not use soil. e.g. lily pads, duckweed, water lettuce, and salvinia. Submerged: These plants grow entirely under the water and help prevent algae growth. They are also called oxygenators. Some root at the bottom of the pond while other varieties do not. e.g. hornwort, bacopa, ludwigia and dwarf sagittaria. Maintenance 101: Pull out plants that are becoming to vigourous in the summer and cut back dead growth in spring.
Always check to see if there are any invasive species that you should avoid; they can take over your pond very quickly.