Cyperus involucratus

RHS Plant Profile

umbrella plant

Other common names

dwarf papyrus grass, umbrella sedge

Synonyms

Cyperus involucratus 'Flabelliformis'
Cyperus alternifolius subsp. flabelliformis
Cyperus alternifolius misapplied
Cyperus flabelliformis

Conservatory Greenhouse Bogs Grass Like

Buy this from Plant Nurseries
8 Suppliers

An evergreen perennial forming a clump of erect stems to 60cm, ending in a whorl of dark green, grassy leafy bracts; flowers insignificant, yellowish-green

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.5-1 metres
Max Height: 0.5-1 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Poorly–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: West–facing or South–facing or East–facing
Exposure: 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): H1C

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Cyperaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Clump forming
Genus: Cyperus can be annuals or evergreen, rhizomatous perennials, with linear, grass-like leaves and terminal clusters of small greenish flower-spikes with spreading leaf-like bracts beneath
Name Status: Correct
Plant Range: Africa, Arabian Pen.

How to Grow

Cultivation

Under glass grow in peat-free, loam-based potting compost in bright filtered light. Water freely in summer and maintain high humidity. Apply a balanced liquid fertiliser monthly. Can be grown outdoors as a bog or marginal plant

Propagation

Propagate by seed at 18 to 21°C in spring in constantly moist seed compost

Suggested planting locations and garden types

Patio and container plants
Low Maintenance

Pruning

Cut back dead material in autumn

Pests

Generally pest-free

Diseases

Generally disease-free