Iris (douglasiana)
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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 | ||
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| 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 in coastal prairie from Santa Barbara County, California to Oregon. | ||
| Propagation Goal: | plants | ||
| Propagation Method: | seed | ||
| ProductType: | Container (plug) | ||
| Stock Type: | Leach Tube | ||
| Time To Grow: | 2 Years | ||
| Target Specifications: | Height: N/A<br> Caliper: N/A<br> Root System: Firm plug in container. | ||
| Propagule Collection: |
Seeds are collected between June 1st and August 31st. Mature pods are dark brown. Seeds aresmall and brown to black at maturity |
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| Propagule Processing: |
Seed Cleaning:Seeds are removed from the pods by hand or using a pair of tweezers. Storage Conditions: Seeds are kept dry and stored in a refrigerator. Seeds/gram: 55 |
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| Pre-Planting Treatments: | Seeds are stratified for 1 month. | ||
| Growing Area Preparation/ Annual Practices for Perennial Crops: |
Fully Controlled Greenhouse. Sowing Method: Direct Seeding. 4 seeds are sown per container(Leach tubes) containing 3 parts standard potting mix of peat moss, fir bark, perlite, and sand to 1 part Perlite. Seeds are sown 3 times the diameter of seed to depth. Containers are watered in with an automatic mist and irrigation system. Seeds are sown on September 1st. % Germination: 30% |
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| Establishment Phase: |
Seeds germinate 60 days after sowing. Seedlings are transplanted 60 days after germination to individual containers (Leach tubes) containing standard potting mix of peat moss, fir bark, perlite, and sand. Transplant Survival averages 50%. Seedlings will not grow large enough the first year. They are held over another year and potted up to 2"x7" tubes the following year. |
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| 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 Leach Tube; San Francisco, California. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/04/23). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.
