Nuisance Aquatic Plant ID

Successful control starts with positive ID

Left unmanaged, some of Missouri's aquatic plants can become nuisances in ponds. Before applying control measures, browse this list of common water plants to identify which ones are causing problems in your pond.

Once you've identified the offenders, browse our Ponds: Plant Management page for technical guides that show you how to control them.

American lotus

Cattails

Chara (muskgrass, stonewort)

Coontail (hornwort, coon's tail)

Duckweeds (watermeal)

Filamentous algae (moss, pond scum)

Hydrilla

Naiads (water nymphs, waterweeds)

Pondweeds

Water lilies

Water milfoils

Water primrose

Water shield

lotus_7-21-2011.jpg

Lotus in a pool at Duck Creek CA
American Lotus Flower

american_pondweed_02-03-14.jpg

American pondweed leaves floating on water surface
American Pondweed (Longleaf Pondweed)

brittle_naiad_02-04-14.jpg

Brittle naiad aquatic plant held in a person’s hand
Brittle Naiad (Brittleleaf Naiad)

chara_algae_02-02-14.jpg

Chara, an alga with stemlike and leaflike structures
Chara (Muskgrass; Stonewort)

coontail_02-02-14.jpg

Photo of coontail aquatic plant with penny for scale
Coontail (Hornwort; Coon’s Tail)

duckweeds_watermeal_02-02-14.jpg

Photo of various duckweeds and watermeal on water surface
Duckweeds and Watermeal

filamentous_green_algae_08-18-13.jpg

Photo of filamentous green algae with air bubbles
Filamentous Green Algae

hydrilla_boat_motor_05-08-14.jpg

Photo of big clump of hydrilla stems tangled around a boat motor
Hydrilla on Boat Motor

water_primrose_flowers_02-02-14.jpg

Photo of water primrose plants with flowers
Water Primrose (Flowers)

water_shield_leaf_02-02-14.jpg

Photo of water shield showing underside of leaf
Water Shield (Underside Of Leaf)

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