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Protocol Information

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


Family Scientific Name: Betulaceae
Family Common Name: Birch Family
Scientific Name: Corylus cornuta (A.DC) Sharp californica (A.DC) Sharp
Common Name: California Hazelnut
Species Code: CORCOR
Ecotype: Marin County, California
General Distribution: C. cornuta ssp. californica is found on moist slopes, mostly below 7,000 feet elevation in the Coast ranges and the Sierra Nevada from Santa Cruz County, California north to British Columbia.
Propagation Goal: Plants
Propagation Method: Seed
Product Type: Container (plug)
Stock Type: Deepot 40
Target Specifications: Height: N/A
Caliper: N/A
Root System: Firm plug in container.
Propagule Collection: Seeds are collected between September 1st and December 1st.
Seed is a brown, marble sized nut and is ripe when the surrounding sheath turns brown.
Seeds are recalcitrant; they must not dry out after collection and should be treated immediately.
Propagule Processing: Seed Cleaning:Remove sheaths surrounding the seeds by hand.
Pre-Planting Treatments: Soak fresh seed for 24 hours. Remove seeds that float and discard. Place viable seeds (sinkers) in plastic freezer with some dry perlite. Place in the refrigerator. Seeds begin to germinate in 90 to 180 days. Check seeds for germination every two weeks.
After seeds start germinating in stratification, check weekly and sow seeds with emerging radicles that are 1/4 inch long.Keep checking until all seeds have germinated.
Growing Area Preparation/
Annual Practices for Perennial Crops:

Fully Controlled Greenhouse.
Sowing Method: Sowing Germinants.
1 seed is sown per container and planted 1 times the depth to diameter. Seeds are suface sown.
Flats are watered in with an automatic irrigation system.
Seeds are sown on July 1st.
% Germination: 40% Seeds are mixed with media to sow and are lightly covered.
individual containers 2" x10" tubes (Deepot 40) containing standard potting mix of peat moss, fir bark, perlite, and sand.
Containers are watered in with an automatic irrigation system.
Seeds are sown on March 1st.
% Germination:75%
Establishment Phase: Seeds germinate 90 days after sowing.
Extra seedlings are transplanted 90 days after germination to individual containers.
Transplant Survival averages 90%.
Length of Establishment Phase: 3 months
Active Growth Phase: After seedlings are established, fertilize with Nutricote (NPK 13-13-13) 3 months after transplanting.
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 Corylus cornuta (A.DC) Sharp californica (A.DC) Sharp plants (Deepot 40); , San Francisco, California. In: Native Plant Network. URL: http://www.nativeplantnetwork.org (accessed 1 September 2014). Moscow (ID): University of Idaho, College of Natural Resources, Forest Research Nursery.
 

Protocol Information

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


Family Scientific Name: Betulaceae
Family Common Name: Birch Family
Scientific Name: Corylus cornuta (A. DC.) Sharp californica (A. DC.) Sharp
Common Synonym: Corylus californica (A. DC.) Rose
Common Name: California Hazelnut
Species Code: CORCOR
Ecotype: Tennessee Valley, California
General Distribution: C. cornuta var. californica is found on moist slopes and banks below 7,000 feet elevation, in the coast ranges and Sierras; from British Columbia to Santa Cruz County, California.
Propagation Goal: Plants
Propagation Method: Vegetative
Product Type: Container (plug)
Stock Type: Treeband #10
Target Specifications: Height: N/A
Caliper: N/A
Root System: Firm plug in container.
Propagule Collection: Semi-Hardwood cuttings are collected between July 1st and November 1st.
Cutting diameter is 1.2 cm (0.5 inch).
Cutting length is 12.5 cm (5 inches) with at least 3 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.
Cuttings are treated with Hormex (3000 ppm IBA) rooting powder and struck in flats containing 3:1 Perlite/Vermiculite.
30 Cuttings are struck 2 inches deep per flat.
% Rooting:50%
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:50 days.
Cuttings are transplanted to individual containers 4"x4"x 10"tubes (Treeband #10) containing standard potting mix of peat moss, fir bark, perlite, and sand. Cuttings are placed in the shadehouse.
Transplant Survival averages 60%.
References: A California Flora and Supplement, Munz, P., University of California Press, Berkeley and London, 1973.

Citation:
Young, Betty 2001. Propagation protocol for vegetative production of container Corylus cornuta (A. DC.) Sharp californica (A. DC.) Sharp plants (Treeband #10); , San Francisco, California. In: Native Plant Network. URL: http://www.nativeplantnetwork.org (accessed 1 September 2014). Moscow (ID): University of Idaho, College of Natural Resources, Forest Research Nursery.
 

Protocol Information

Carol and Jerry Baskin
Professors
University of Kentucky
University of Kentucky
Lexington, Kentucky 40506-0225


Family Scientific Name: Betulaceae
Family Common Name: Birch family
Scientific Name: Corylus cornuta Marshall cornuta
Common Name: Hazelnut
Species Code: CORCOR
General Distribution: C. cornuta is found from British Columbia east to Newfoundland and south through the United States to Georgia and the upper midwest; and south through the Cascade mountains to California and east to Idaho and Wyoming.
Propagation Goal: Plants
Propagation Method: Seed
Product Type: Container (plug)
Propagule Processing: Seeds exhibit physiological dormancy.
Pre-Planting Treatments: Seeds are placed in cold moist stratification for 60 to 120 days. Germination occurs at 30D/20N C alternating temperature cycle.
References: Brinkman, K. A. (1974e). Corylus L. Hazel, Filbert. Pp. 343-345. In: C. S. Schopmeyer (Tech. Coord.). Seeds of woody plants in the United States. USDA. Forest Service. Agriculture Handbook No. 450.
Baskin, C.J. and Baskin, J.M. Seeds: Ecology, Biogeography and Evolution in Dormancy and Germination, Academic Press, 1998. Chapter 10: A Geographical Perspective on Germination Ecology: Temperate and Arctic Zones, pages 331 to 458.

Citation:
Baskin, Carol C.; Baskin, Jerry M. 2002. Propagation protocol for production of container Corylus cornuta Marshall cornuta plants; University of Kentucky, Lexington, Kentucky. In: Native Plant Network. URL: http://www.nativeplantnetwork.org (accessed 1 September 2014). Moscow (ID): University of Idaho, College of Natural Resources, Forest Research Nursery.