Home
Advanced Search Map Locator
View Settings
Nurseries Carrying this Plant Add Current Plant To List Edit Current Plant
Show all Photos

Butterflies My Plant Lists Nurseries Planting Guide Contact Calscape About Calscape
Tap map to see plants native to location
Order by Popularity Order by Common Name Order by Scientific Name Order by # of Butterflies Hosted
Show nursery cultivars Hide nursery cultivars
Show plants not in nurseries Hide plants not in nurseries
Grid view Text view
Loading....
Purple Three Awn
Aristida purpurea
  
About Purple Three Awn (Aristida purpurea) 18 Nurseries Carry This Plant Aristida purpurea is a species of grass native to North America which is known by the common name purple three-awn. This grass is fairly widespread and can be found across the western two thirds of the United States, much of southern Canada and parts of northern Mexico. It is most abundant on the plains. In California it is found primarily from Mono County southwards, in desert, mountain and coastal habitats. This is a perennial grass, growing erect to under a meter in height, and the flower glumes often assume a light brown to reddish-purple color. There are several recognized varieties with overlapping geographical ranges. This is not considered to be a good graze for livestock because the awns are sharp and the protein content of the grass is low. However, it makes an attractive landscape grass that is a good substitute for invasive, non-native grasses.
Plant Description
Plant Type
Plant Type
Grasses

Size
Size
1.6 - 3.3 ft tall
2 ft wide

Form
Form
Fountain

Dormancy
Dormancy
Evergreen

Fragrance
Fragrance
None

Flower Color
Flower Color
Cream, Purple, Red, Brown

Flowering Season
Flowering Season
Winter, Spring

Landscaping Information
Sun
Sun
Full Sun

Moisture
Moisture
Very Low

Summer Irrigation
Summer Irrigation
Max 1x / month once established

Nurseries
Nurseries

Ease of Care
Ease of Care
Very Easy

Cold Tolerance
Cold Tolerance
Tolerates cold to -20° F

Soil Drainage
Soil Drainage
Fast, Medium

Soil Description
Soil Description
Tolerates a variety of soils. Soil PH: 6.5 - 7.5

Common uses
Common uses
Groundcovers

Companion Plants
Companion Plants
Can be used with a very wide variety of other plants from the mountains, deserts or coast. Examples include Creosote Bush (Larrea tridentata), Sagebrush (Artemisia sp.), Joshua Tree (Yucca brevifolia), Brittlebush (Encelia sp.), Buckwheat (Eriogonum sp.), and various cactus and succulent species.

Maintenance
Maintenance
Avoid cutting back the plant if possible. Remove old seed heads by gently pulling.

Propagation
Propagation?
By seed. This plant readily seeds itself and like other grasses it can be mildly invasive in the garden. New young plants can be easily removed by pulling.

Natural Setting
Site Type
Site Type
Sandy or rocky soils, slopes, plains

Climate
Climate
Annual Precipitation: 2.6" - 34.1", Summer Precipitation: 0.15" - 3.28", Coldest Month: 32.9" - 63.2", Hottest Month: 61.8" - 88.8", Humidity: 1.19" - 42.80", Elevation: 92" - 7251"

Alternative Names
Common Names: Purple Three-awn, Purple Threeawn


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


Sign in to your Calscape Account X




Once signed in, you'll be able to access any previously saved plant lists or create new ones.

Email Address
Password

Sign In