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The Forest Service National Center for Reforestation, Nurseries, and Genetic Resources (RNGR) is a leading source of technical information for nurseries and land managers regarding production and planting of trees and other native plants for reforestation, restoration, and conservation.

 
NPN Protocol Details Image

Iris (douglasiana)

Betty Young
Nurseries Sr Manager
Bldg 201, Fort Mason
San Francisco, California 94123
415-331-6917
415-331-7521 (fax)
byoung@ggnpa.org

Family Scientific Name: Iridaceae
Family Common Name: Iris Family
Scientific Name: Iris douglasiana Herbert
Common Synonym: Iris douglasiana Herbert oregonensis
Common Name: Douglas Iris
Species Code: IRIDOU
Ecotype: Marin County, California
General Distribution: I. douglasiana is found on grassy slopoes and open places; from Oregon to Santa Barbara County, California.
Propagation Goal: plants
Propagation Method: vegetative
ProductType: Container (plug)
Stock Type: 1 gallon (3L)
Time To Grow: 0
Target Specifications: Height: N/A<br> Caliper: N/A<br> Root System: Firm plug in container.
Propagule Collection: Rhizome divisions are collected in the fall.
Propagule Processing: Rhizomes are collected from field plants.
Pre-Planting Treatments: Rhizomes are cut into pieces and diractly potted into 1 gallon cans.
Growing Area Preparation/
Annual Practices for Perennial Crops:
Shadehouse.
Establishment Phase: 1 gallon cans are filled with standard potting mix of peat moss, fir bark, perlite, and sand.
Cans are placed in the shadehouse.
Transplant Survival averages 75%.
References: A California Flora and Supplement, Munz, P., University of California Press, Berkeley and London, 1973.

Citation:

Young, Betty. 2001. Propagation protocol for production of Container (plug) Iris douglasiana Herbert plants 1 gallon (3L); San Francisco, California. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/02). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.