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Artemisia (rigida)

Lee Riley
Horticulturist
USDA FS - Dorena Genetic Resource Center
34963 Shoreview Road
Cottage Grove, Oregon 97424
541-915-7324
541-767-5709 (fax)
leriley@fs.fed.us
Family Scientific Name: Asteraceae
Family Common Name: Aster or Sunflower
Scientific Name: Artemisia rigida
Common Name: Scabland or Stiff Sagebrush
Species Code: ARRI2
Ecotype: Umatilla NF, Oregon
General Distribution: Eastern Washington, northeastern Oregon, and west-central Idaho. At elevations of 200 to 2000 m (700 to 7000 ft).
Propagation Goal: Plants
Propagation Method: Seed
ProductType: Container (plug)
Stock Type: 444 ml (27 in3) container
Time To Grow: 18 weeks
Target Specifications: Stock Type: Container seedling Root System: Firm plug in container.
Propagule Collection: Collect ripe seeds from September - November.
Propagule Processing: Isolate the seeds from other plant material by hand with a screen. Then thoroughly dry.
Pre-Planting Treatments: Seeds are sown into trays filled with stabilized medium plugs (Q-plugs). Trays are sealed inside plastic bags and placed into refrigeration at 1 to 3 °C for 60 days. Trays are checked weekly and kept moist throughout the stratification period. If mold is evident, trays should be treated with 1% hydrogen peroxide.
Growing Area Preparation/
Annual Practices for Perennial Crops:		 Greenhouse growing facility.
Q-plugs are lightly covered with nursery grit. Seedlings are transplanted to target containers approximately 3 weeks following removal from stratification.
Growing medium used is 40:20:20:20 peat:composted fir bark:perlite:pumice with Apex controlled release fertilizer (16N:5P2O5:10K2O with minors; 6- to 7-month release rate at 21°C) at the rate of 2 g Apex per 444 ml container.
Establishment Phase: Germination is uniform and is usually complete in 2 weeks. Following germination (while still in Q-plugs), plants are fertilized with soluble 12-2-14-6Ca-3Mg at 75 to 100 ppm for 2 weeks. Careful control of irrigation is necessary to avoid seedling damping-off.
Length of Establishment Phase: 2 to 3 weeks
Active Growth Phase: Plants are somewhat slow-growing following establishment. Soluble fertilizer (20-9-20 NPK, 20-18-18 NPK, or 17-5-24 NPK) at 100 to 150 ppm is applied weekly throughout the growing season. Careful control of irrigation is necessary to avoid stem rot.
Length of Active Growth Phase: 18 weeks
Hardening Phase: A careful dry-down is done to induce dormancy. Seedlings are moved to an outdoor growing area in early September.
Length of Hardening Phase: 2 to 3 weeks
Harvesting, Storage and Shipping: Harvest Date: Mid to late October
Storage Conditions: Seedlings are usually outplanted in fall. No storage except in outdoor growing area. Plants are well irrigated prior to shipping and shipped in containers.
Other Comments: Seedlings and transplants do not compete well with cheatgrass or annuals. It is a late successional species that takes a longer time to become dominant.
It usually grows in shallow, stony sites, often above basaltic bedrock.
References: Dorena Genetic Resource Center Propagation Records, unpublished.

Kendzierski P. 2005. Stiff Sagebrush/Rock Sagebrush/Scabland Sagebrush, Artemisia rigida. Seattle (WA): University of Washington. URL:
https://depts.washington.edu/propplnt/Plants/Artemisia%20rigida.htm (accessed 23 Oct 2019).

McArthur ED, Taylor JR. nd. Artemisia rigida (Nutt.) Gray stiff sagebrush. Provo (UT): USDA Forest Service, Rocky Mountain Research Station, Shrub Sciences Laboratory. URL:
https://www.fs.fed.us/rm/boise/research/shrub/Links/2004papers/mcarthur-artemisiarigida2004.pdf (accessed 23 Oct 2019).

McWilliams J. 2003. Artemisia rigida. In: Fire Effects Information System, Online. Missoula (MT): USDA Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory. URL: https://www.fs.fed.us/database/feis/plants/shrub/artrig/all.html (Accessed 23 Oct 2019).

Citation:

Fisher, Leslie; Riley, Lee E.. 2020. Propagation protocol for production of Container (plug) Artemisia rigida Plants 444 ml (27 in3) container; USDA FS - Dorena Genetic Resource Center Cottage Grove, Oregon. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/05/06). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.