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Canadian waterweed
Also known as: Yankee weed, Oxygen weed, Broad waterweed, Canada waterweed, American pondweed
Canadian waterweed (Elodea canadensis) has been introduced into Europe, Asia, Australia, and Africa, where it is considered an alien invasive plant. It is widely propagated and sold in the aquarium industry for its oxygenating properties, but in the wild, it outcompetes native plants; clogs up rivers, streams, and drainage channels; and obstructs boats.
Scientific classification
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Herb
Plant Type
Late spring, Summer, Early fall
Bloom Time
10 cm to 50 cm
Plant Height
50 cm to 1 m
Spread
Green
Leaf Color
5 mm
Flower Size
White, Green
Flower Color
Green
Stem Color
Evergreen, Semi-evergreen
Leaf type
5 - 35 ℃
Ideal Temperature
Spring
Growth Season

Images of Canadian waterweed

Attributes of Canadian waterweed

Growth Rate
Exhibiting rapid growth during spring, canadian waterweed undergoes substantial leaf production and extensive vine expansion. This speed ensures its dynamic adaptation to aquatic environments, often reaching heights of over 3 meters in a season. Subsequent, slower growth in other seasons suggests strategic resource handling.

Distribution of Canadian waterweed

Distribution Map
Elodea canadensis, colloquially known as 'canadian waterweed', boasts a broad geographical presence. Originating in North America, canadian waterweed has established itself in select regions across multiple continents, including Europe and Asia, and has been introduced to parts of Africa and Oceania. In certain areas, canadian waterweed is thought to be an active participant in aquatic environments, potentially influencing local ecosystems. This green fixture is embraced within the horticultural community, valued for its role in cultivation. While canadian waterweed may be considered assertive in some ecosystems, its cultivation status is sustained across diverse areas, reflecting its adaptability and versatility.
Native
Cultivated
Invasive
Introduced
No species reported
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Habitat
Quiet waters of rivers and other waterways
Hemisphere Trend Curve

Care Guide for Canadian waterweed

Every week
Water
Full sun
Sunlight
5 - 35 ℃
Ideal Temperature
Garden Soil
Soil Type
Water: Canadian waterweed thrives in freshwater habitats, tolerating submerged conditions and maintaining internal water balance. It requires weekly watering to replicate its natural environment. Primarily grown outdoors, it forms dense mats in ponds and lakes, with growth cycles influenced by water temperature for vigorous propagation.
Fertilize: For canadian waterweed, a balanced, aquatic-appropriate fertilizer is essential. Fertilize monthly during growth and bi-monthly in dormancy. Avoid over-fertilization to prevent algal blooms. Use a gentle poke method for fertilizer tabs, ensuring root integration while maintaining the aquatic environment, promoting canadian waterweed vitality.
Pruning: Canadian waterweed is a fast-growing aquatic plant featuring small serrated leaves. Pruning in early to late spring promotes healthy growth, improves water circulation, and enhances light penetration. Regular trimming controls invasive spread, ensuring a balanced aquatic environment.
Propagation: Canadian waterweed is propagated by cutting a healthy 5-8 cm stem just below a leaf node. Remove lower leaves and place in water or moist soil with adequate light. Roots develop within a week, allowing transfer to its final aquatic habitat.
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