Also called Hornwort
ZONE:
3
COLOUR:
Non-flowering
HEIGHT:
30-60 cm
SPREAD:
2-4 m
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Also called Hornwort
ZONE:
3
COLOUR:
Non-flowering
HEIGHT:
30-60 cm
SPREAD:
2-4 m
Plant in full sun and relatively clear water with adequate levels of nutrients. More tolerant of shade than the species. Will adapt to sites with slow-moving or stagnant water where there is some protection from wind and waves. It can be aggressive.
Native to Ontario and most of North America
Called "coontail" because its tight whorls resemble a racoon's tail.
An active photosynthesizer, it releases oxygen into the water, while absorbing excess nutrients such as nitrogen and phosphorous, limiting algae growth. It also exhibits allelopathic properties (releasing natural substances that inhibit the growth of blue-green algae.) It can also absorb trace minerals like cadmium and lead. Ducks enjoy the seeds, but we hope they do not contain too much poison.
