Umbrella Sedge Cyperus alternifolius
Other Common Name(s):
Other plants called Umbrella Sedge:
Previously known as:
- Cyperus frondosus
- Cyperus involucratus
- Eucyperus alternifolius
- Phonetic Spelling
- sy-PEER-us al-tern-ee-FOH-lee-us
- Description
-
Cyperus comes from a Greek word meaning 'sedge', while alternifolius translates to 'alternate-leaved'.
The common name of Umbrella Plant, Palm, Sedge, or Grass comes from the bracts that grow atop of its tall stems. They have the appearance of the spokes of an umbrella. The bracts are sometimes referred to as leaves. The true leaves on this plant clasp the tall stem in a manner so that they are hard to distinguish from the stem.
The Umbrella Plant is a member of a large family of plants, with over 600 grass-like varieties, typically native to predominately tropical locations.
Its root system is well-developed, anchoring the plant into the surrounding wet soil where it can spread via its rhizomes as well as by its self-seeding tendencies. In some locations, with the right conditions, it can become weedy and invasive.
Typically reaching heights of 4', under ideal outdoor conditions of a warm, moist environment, they can grow up to 6'. As a houseplant, the size can be cut in half.
This plant does well in sun or light shade, however, requires protection from strong sun and harsh winds, as the bracts can be damaged from exposure, Whether grown as part of a water garden or indoors as a houseplant (container on tray of water), keep the soil moist or grow in standing water. Fertile soil is preferred.
Browning leaf tips can be caused by the lack of proper water conditions. The roots need to remain wet at all times.
It can be used as a filter for soils. Known as phytoremediation, where plants have the ability to extract and remove pollutants from soils, Cyperus alternifolius can accumulate copper, manganese from the surrounding soil.
Quick ID Hints:
- Grass-like leafy bracts form umbrella at top of scape
- Stem (scape) up to 3' long, green, glabrous
- 20-25 linear, leaflike bracts crowded at scape top
The inflorescence is non-ornamental. The scapes tend to grow so long that they flop over and take root, so they may require support.
Insects, Diseases, and Other Plant Problems: No serious issues.
- See this plant in the following landscape:
- Water Garden at David Caldwell Historic Park
- Cultivars / Varieties:
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- 'Gracilis'
Dwarf form - 2' - 'Nana'
Dwarf form - 2-4' - 'Variegatus'
Variegated leaves
- 'Gracilis'
- 'Gracilis', 'Nana', 'Variegatus'
- Tags:
- Cultivars / Varieties:
-
- 'Gracilis'
Dwarf form - 2' - 'Nana'
Dwarf form - 2-4' - 'Variegatus'
Variegated leaves
- 'Gracilis'
- 'Gracilis', 'Nana', 'Variegatus'
- Tags:
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Attributes:
- Genus:
- Cyperus
- Species:
- alternifolius
- Family:
- Cyperaceae
- Uses (Ethnobotany):
- Houseplants, containers, cools and ponds, arrangements
- Life Cycle:
- Perennial
- Woody
- Recommended Propagation Strategy:
- Division
- Stem Cutting
- Country Or Region Of Origin:
- Africa and the Arabian Peninsula
- Play Value:
- Buffer
- Easy to Grow
- Dimensions:
- Height: 1 ft. 6 in. - 4 ft. 0 in.
- Width: 2 ft. 0 in. - 3 ft. 0 in.
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Whole Plant Traits:
- Plant Type:
- Ornamental Grasses and Sedges
- Perennial
- Water Plant
- Habit/Form:
- Clumping
- Erect
- Multi-stemmed
- Growth Rate:
- Rapid
- Maintenance:
- Medium
- Texture:
- Medium
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Cultural Conditions:
- Light:
- Full sun (6 or more hours of direct sunlight a day)
- Partial Shade (Direct sunlight only part of the day, 2-6 hours)
- Soil Texture:
- Loam (Silt)
- Sand
- Soil pH:
- Acid (<6.0)
- Neutral (6.0-8.0)
- Soil Drainage:
- Frequent Standing Water
- Available Space To Plant:
- 12 inches-3 feet
- NC Region:
- Coastal
- USDA Plant Hardiness Zone:
- 8a, 8b, 9a, 9b, 10a, 10b, 11a, 11b
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Fruit:
- Fruit Color:
- Brown/Copper
- Fruit Length:
- < 1 inch
- Fruit Width:
- < 1 inch
- Fruit Description:
- The fruits are small, brown, and resemble a nut.
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Flowers:
- Flower Color:
- Green
- White
- Flower Inflorescence:
- Head
- Spike
- Umbel
- Flower Bloom Time:
- Fall
- Summer
- Flower Size:
- < 1 inch
- Flower Description:
- Flat, leaf-like bract produced at top of stem. A compound umbel of spikelets, subtended by leafy bracts. Spikelets brown, 1/4".
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Leaves:
- Leaf Color:
- Green
- Leaf Feel:
- Rough
- Leaf Value To Gardener:
- Good Cut
- Good Dried
- Showy
- Leaf Type:
- Simple
- Leaf Arrangement:
- Alternate
- Leaf Shape:
- Linear
- Leaf Margin:
- Serrate
- Hairs Present:
- No
- Leaf Length:
- > 6 inches
- Leaf Width:
- < 1 inch
- Leaf Description:
- Leafless stem topped with spiral of dark green leaves. Bracts 11-25, linear, leaflike, green, 1/4" wide, crowded at top of scape.
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Stem:
- Stem Color:
- Green
- Stem Is Aromatic:
- No
- Stem Form:
- Straight
- Stem Surface:
- Smooth (glabrous)
- Stem Description:
- The stems (scapes) are erect, dark green, crowded. Typically, multi-stemmed.
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Landscape:
- Landscape Location:
- Container
- Houseplants
- Pond
- Landscape Theme:
- Cutting Garden
- Rain Garden
- Water Garden
- Design Feature:
- Accent
- Border
- Specimen
- Resistance To Challenges:
- Humidity
- Wet Soil