Brittle waternymph (Najas minor)

Brittle waternymph

Also known as: Lesser naiad, Brittle naiad

Najas minor is an aquatic plant commonly known as brittle waternymph. It is native to North Africa, Europe, and Asia. It has also been introduced to North America, where it has proven to be an invasive weed. It grows best in still and calm waters.

Scientific classification

Species

Brittle waternymph (Najas minor)

Water plantains and allies

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Annual

Lifespan

Herb

Plant Type

Spring, Summer, Fall

Bloom Time

4 cm to 25 cm

Plant Height

Images of Brittle waternymph

Distribution of Brittle waternymph

Distribution Map

Brittle waternymph is native to temperate and tropical regions across Eurasia and Africa. It has since been introduced to the temperate zones of North America. Hailing from a broad range of freshwater habitats in its native regions, brittle waternymph is an aquatic plant that has expanded beyond its original distribution, often establishing itself in new locales where it may become naturalized or invasive.

Native

Cultivated

Invasive

Introduced

No species reported

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Hemisphere Trend Curve

Northern

Sorthern

Weed Control

Brittle waternymph (Najas minor) is an aquatic plant, a source of food for some species of fish. However, it is considered invasive in North America.

How to Control It

Brittle waternymph is usually controlled by repeated physical removal - it can be raked or mechanically harvested. If you like to go boating in areas that are infested with this plant, check your boat before moving to new areas, and use physical barriers around docks and swimming areas. There are herbicides that can be used for brittle waternymph control, but their use is not advised in aquatic environments, as it is very hard not to affect fish and other plant species too.

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Care Guide for Brittle waternymph

Every week

Water

Full sun

Sunlight

Water: Brittle waternymph thrives in freshwater habitats, requiring consistent moisture without excessive watering. Weekly watering mimics its natural conditions. Preferring outdoor environments, brittle waternymph forms dense colonies in ponds and lakes, contributing to the ecosystem by oxygenating water and providing habitat.

Fertilize: For brittle waternymph, apply balanced fertilizers monthly and switch to high-nitrogen during growth peaks for healthy foliage. Dilute based on size to prevent over-fertilization. Adjust frequency in winter dormancy and apply after water changes for even nutrient distribution.

Pruning: Brittle waternymph features delicate, feathery underwater foliage. Prune in early to late spring to manage growth and maintain water quality. Remove overgrown areas and dead stems to improve circulation, prevent overcrowding, and promote health. Use clean, sharp scissors for proper pruning and enhanced aesthetics.

Propagation: Brittle waternymph thrives in freshwater habitats and propagates primarily by sowing stem segments, which develop roots and shoots. Successful growth requires a submerged environment with sufficient light, temperature, and careful water quality maintenance to enhance the vitality of new individuals.

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Images of Brittle waternymph

Distribution of Brittle waternymph

Weed Control

Care Guide for Brittle waternymph

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