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Frangula (californica)

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: Rhamnaceae
Family Common Name: Buckthorn Family
Scientific Name: Frangula californica (Eschsch.) Gray californica (Eschsch.) Gray
Common Synonym: Rhamnus californica Eschsch.
Common Name: California Buckthorn
Species Code: FRACAL
Ecotype: Tennessee Valley, California
General Distribution: F. californica ssp. californica is found in sandy and rocky places alng the coast, below 3,500 feet elevation; from Siksiyou County south to Orange County, California.
Propagation Goal: plants
Propagation Method: vegetative
ProductType: Container (plug)
Stock Type: Deepot 40
Time To Grow: 0
Target Specifications: Height: N/A<br> Caliper: N/A<br> Root System: Firm plug in container.
Propagule Collection: Hardwood cuttings are collected between November 1st and January 31st.
Cutting diameter is 0.25 inches.
Cutting length is 4 inches with at least 4 nodes.
Propagule Processing: Cuttings are kept moist and cool prior to treatment.
Pre-Planting Treatments: Cuttings are dipped in a mild bleach solution for 30 seconds.
Make a 45 degree angle cut just below last node at the base of the cutting. Cut top leaving one leaf above the top node. Cuttings should be 3 nodes in length.
Cuttings are treated with Hormex (3000 ppm IBA) rooting powder and struck in flats containing 3:1 Perlite/Vermiculite.
50 Cuttings are struck 2 inches deep per flat.

% Rooting: 60%
Growing Area Preparation/
Annual Practices for Perennial Crops:
Fully Controlled Greenhouse.
Flats are kept in the greenhouse and watered with an automatic mist system until roots are fully developed.
Establishment Phase: Planting Method: Transplanting Cuttings.

Time to Transplant: 60 days.
Cuttings are transplanted to individual containers 2"x10" tubes (Deepot 40) containing standard potting mix of peat moss, fir bark, perlite, and sand. Cuttings are placed in the shadehouse.
Transplant Survival averages 50%.
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) Frangula californica (Eschsch.) Gray plants Deepot 40; San Francisco, California. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/03/28). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.