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AquaticBogsHerbaceous Perennial

Butomus umbellatus 'Rosenrot'

flowering rush 'Rosenrot'

A deciduous, rush-like, marginal aquatic perennial, with narrow, twisted green leaves. Umbels of cup-shaped, mid- to deep pink, fragrant flowers are held above the foliage on upright, red-tinted stems up to 1m tall in summer

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Ultimate height

0.5–1 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Clay

Loam

Sand

Moisture

Poorly–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing

Exposure

Exposed or Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Butomaceae
Native to the UK: No
Foliage: Deciduous
Habit: Submerged
Genus: Butomus are submerged rhizomatous perennials with narrowly strap-shaped leaves and 6-petalled pink flowers held in umbels well above water level
Name status: Accepted

How to grow

Cultivation

Grow in fertile mud at pond margins or in water up to 25cm deep, in full sun. See pond plants and bog gardens for further advice

Propagation

Propagate by seed sown as soon as ripe or by rhizome division in spring. See pond plants propagation for further advice

Suggested planting locations and garden types

Cottage and informal garden

Pruning

Cut back after flowering

Pests

May be susceptible to water lily aphid

Diseases

Generally disease-free

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