Flowering rush (Butomus umbellatus)

Flowering rush

Flowering rush (Butomus umbellatus) is an aquatic plant introduced into North America from Eurasia as an ornamental plant. It is now regarded as a very invasive weed in the Great Lakes area. The stems provide a ladder for damsel and dragonfly nymphs as they emerge from the depths of the pond to shed their larval skins.

Scientific classification

Species

Flowering rush (Butomus umbellatus)

Water plantains and allies

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Perennial

Lifespan

30 cm to 38 cm

Spread

Green

Leaf Color

2 cm to 3 cm

Flower Size

Pink, White

Flower Color

Green, Pink

Stem Color

Deciduous

Leaf type

20 - 35 ℃

Ideal Temperature

Images of Flowering rush

Distribution of Flowering rush

Distribution Map

Flowering rush is indigenous to temperate regions across Eurasia, finding its origins in widespread areas from North Africa to Central Asia. The species has also been introduced to other continents, where it is now cultivated. Its habitat typically spans from European wetlands to the steppes of Asia. Flowering rush thrives in both its native zones and new environments, often around fresh water sources.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Pond margins, ditches, canals

Hemisphere Trend Curve

Northern

Sorthern

Care Guide for Flowering rush

Once per day

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Flowering rush flourishes in standing or slow-moving water, requiring daily watering due to low drought tolerance. This species prefers high humidity and wetland conditions, thriving when roots are submerged or in saturated soil, making it predominantly an outdoor plant closely tied to water availability.

Fertilize: To ensure optimal growth, fertilize flowering rush in spring with high-nitrogen granules, followed by a balanced slow-release option every 6-8 weeks. Cease fertilization in winter. Monitor growth to prevent overfertilization, and use gloves for protection. This regimen promotes flourishing aquatic conditions for flowering rush.

Pruning: Flowering rush is a versatile aquatic plant with umbrella-shaped flowers. Prune in early spring to manage growth and promote flowering. Remove dead foliage and spent stems to avoid overcrowding, enhancing water circulation for better health. Avoid heavy pruning to prevent stress.

Propagation: Flowering rush is a water-margin perennial that spreads by division. During dormancy, separate crowded clumps, ensuring sections have roots and a growing point. Replant in wet soil or shallow water to stabilize. Monitor growth regularly, as flowering rush can become invasive.

Repotting: Flowering rush, a waterside perennial, needs repotting every 2-3 years to support growth. Early spring is ideal for repotting, using larger containers for its roots. Maintain aquatic conditions post-repotting for hydration, promoting healthy flowering and a robust structure for an attractive display.

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