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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

Corylus (cornuta)

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: 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
ProductType: Container (plug)
Stock Type: Treeband #10
Time To Grow: 0
Target Specifications: Height: N/A<br> Caliper: N/A<br> 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 untilroots 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 production of Container (plug) Corylus cornuta (A. DC.) Sharp plants Treeband #10; San Francisco, California. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/01). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.