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Agrostis scabra

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About Ticklegrass (Agrostis scabra) Agrostis scabra is a common species of grass known by the common names rough bent grass and ticklegrass. A tumbleweed, it is native to much of North America, and widely known elsewhere as an introduced species. It occurs in most of the United States except parts of the Southeast and most of Canada except for the farthest northern regions. It can be found in Mexico, and across Alaska to far eastern Asia as far south as Korea. It is resident in a great variety of habitats, from warm coastal valleys to the alpine climate of high mountain ranges. This is a perennial grass growing mainly upright in form to heights around 75 centimeters. The leaves are rough with tiny hairs and up to about 14 centimeters long. The flower cluster is a wide open array of spreading, thready branches bearing spikelets each a few millimeters long. The tolerance of this grass to alpine climates makes it a good plant to use in revegetating disturbed land in such regions. It is known to spring up on sites where few other plants can grow, such as abandoned coal mines and soils polluted with sulfur, copper, and nickel.
Plant Description
Plant Type

Max. Height
2.5 ft (0.8 m)


Growth Rate

Flower Color

Flowering Season

Native Status

Natural Setting
Site Type
Disturbed places and meadows

Sun, Part Shade

Elevation ?
52' - 13977'

Annual Precip. ?
9.1" - 120.2"

Summer Precip. ?
0.21" - 4.08"

Coldest Month ?
10.0° F - 49.6° F

Hottest Month ?
33.4° F - 78.0° F

Humidity ?
0.38 vpd - 28.06 vpd

Soil Description
Prefers loamy or clay soils. Grows poorly in sandy soils.

Sunset Zones ?
1, 2, 3, 4, 5, 6*, 7*, 14, 15*, 16*, 17*, 18, 19, 20, 21, 22, 23, 24

Landscaping Information
Ease of Care
Moderately Easy

Water Requirement ?
Extremely Low
Very Low
Moderate - High

Propagation ?
For propagating by seed: No treatment.

Common uses
Deer Resistant

Other Names
Botanical Names
Agrostis scabra var. geminata

Common Names
Rough Bent Grass, Rough Bentgrass

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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