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Giant Stipa
Stipa coronata
About Giant Stipa (Stipa coronata) Nurseries Show All Photos Achnatherum coronatum is a greenish species of grass known by the common name crested needlegrass. It is native to southern California and Baja California, where it grows on the coastal and inland hills, often in chaparral plant communities. This is a perennial grass forming loose bunches up to about two meters in maximum height, but usually shorter. It is similar to its relative, Achnatherum parishii, and the two intergrade in many characteristics and are easily confused. The grass bears a generous flower cluster up to 60 centimeters long with large spikelets up to 2 centimeters long each, not including an awn of up to 4.5 centimeters. The awn has two distinct kinks.
Plant Description
Plant Type

Max. Height
3.5 - 7 ft (1.1 - 2.1 m)

Flower Color

Native Status

Natural Setting
Site Type
Gravelly or rocky slopes


Elevation ?
12' - 9045'

Annual Precip. ?
6.8" - 40.9"

Summer Precip. ?
0.19" - 4.10"

Coldest Month ?
31.0° F - 56.6° F

Hottest Month ?
53.4° F - 82.3° F

Humidity ?
0.94 vpd - 32.60 vpd

Soil Description
Usually found in rocky, sandy or gravelly soil


Sunset Zones ?
7, 11, 14*, 15*, 16*, 17, 19, 20, 21, 22*, 23*

Landscaping Information
Ease of Care
Moderately Easy

Water Requirement ?
Very Low
Extremely Low
Very Low
Moderate - High

Propagation ?
For propagating by seed: No treatment.

Common uses
Deer Resistant

Nursery Availability
Commonly Available

Other Names
Common Names
Crested Needlegrass, Giant Ricegrass

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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