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Tall Flatsedge
( Cyperus eragrostis )
Cyperus eragrostis
More Photos at CalPhotos
More Info at Jepson eFlora
Calflora
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About Tall Flatsedge (Cyperus eragrostis)
24 Nurseries Carry This Plant
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Cyperus eragrostis
is a species in the Cyperaceae (Sedge) family known by several common names, including tall flatsedge, Nutsedge and Tall Cyperus. It is almost always found in wetland-riparian areas where it can spread rapidly. It is a green sedge with tall, erect stems, and long, thin, pointed leaves. Its flowers are found within tough, rounded, greenish-yellow or beige spikelets. This species is originally native to the western United States but it has become naturalized across North America, Europe, and parts of South America and Australia. It can become a weed where it is introduced; it has been known to infest rice fields.
Plant Description
Plant Type
Grasses
Size
3 ft tall
30 ft wide
Growth Rate
Fast
Dormancy
Evergreen
Flower Color
Green, Yellow
Flowering Season
Spring, Summer, Fall
Wildlife Supported
Butterflies & moths hosted ( 2
likely
* )
SHOW ALL
*
Dun Skipper
Euphyes vestris
Euphyes vestris
*
Javelin Moth
Bactra verutana
Bactra verutana
Landscaping Information
Sun
Full Sun
Moisture
Moderate - High
Summer Irrigation
Keep moist
Nurseries
Carried by 24
Cold Tolerance
Tolerates cold to 15° F
Soil Drainage
Standing
Soil Description
Tolerates a variety of soils. Soil PH: 5.0 - 8.0
Common uses
Bogs and Ponds
Companion Plants
Use caution in planting where it may spread out of control. Plant in constantly wet areas with other wetland-riparian trees and shrubs such as Maples (
Acer sp.
), Alders (
Alnus sp.
), Dogwood (
Cornus sp.
),
California Walnut
(
Juglans californica
or hindsii), Sycamore (
Platanus racemosa
),
Cottonwood
(
Populus sp.
), Currant/
Gooseberry
(
Ribes sp.
), wild
Rose
(
Rosa sp.
), Willows (
Salix sp.
), and wild grape (
Vitis californica
or girdiana). Also works well with various other wetland grasses and grass-like plants such as Spikerush (
Eleocharis sp.
) and Rushes (
Juncus sp.
)
Natural Setting
Site Type
Vernal pools, streambanks, ditches and other wet areas
Climate
Annual Precipitation: 2.6" - 90.5", Summer Precipitation: 0.15" - 2.51", Coldest Month: 38.4" - 59.1", Hottest Month: 57.7" - 88.0", Humidity: 0.01" - 38.29", Elevation: -42" - 5105"
Alternative Names
Common Names
: Nutsedge, Tall Cyperus
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Tall Flatsedge
Cyperus eragrostis
Sources include:
Wikipedia
. All text shown in the "About" section of these pages is available under the
Creative Commons Attribution-ShareAlike License
. Plant observation data provided by the participants of the
California Consortia of Herbaria
, Sunset information provided by
Jepson Flora Project
. Propogation from seed information provided by the
Santa Barbara Botanical Garden
from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include
CalPhotos
,
Wikimedia Commons
, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include
Calflora
,
CNPS Manual of Vegetation Online
,
Jepson Flora Project
,
Las Pilitas
,
Theodore Payne
,
Tree of Life
,
The Xerces Society
, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from
PRISM Climate Group, Oregon State University
, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.
Links:
Jepson eFlora Taxon Page
CalPhotos
Wikipedia
Calflora
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