Rhamnaceae (Frangula)

Protocol Information for:

Label_title:
Frangula (californica)

Family Names:

Family Scientific Name:
Rhamnaceae

Family Common Name:
Buckthorn Family

Scientific Names:

Genus:
Frangula

Species:
californica

Scientific Classification:
Sub-species

Scientific SubSpecies:
californica

Species Authority:
(Eschsch.) Gray

Scientific SubAuthority:
(Eschsch.) Gray

Authors:

Betty Young

Common Synonym:

Genus:
Rhamnus

Species:
californica

Synonym Classification:

Synonym SubSpecies:

Species Authority:
Eschsch.

Synonym SubAuthority:

Other Information:

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.

Known Invasiveness:

Propagation Goal:
plants

Propagation Method:
vegetative

Product Type:
Container (plug)

Stock Type:
Deepot 40

Grow Time:
0

Target Specifications:
Height: N/A
Caliper: N/A
Root System: Firm plug in container.

Propagation 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.

Propagation Processing/Propagule Characteristics:
Cuttings are kept moist and cool prior to treatment.

Pre-Planting Propagule 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%.

Length of Establishment Phase:

Active Growth Phase:

Length of Active Growth Phase:

Hardening Phase:

Length of Hardening Phase:

Harvesting, Storage and Shipping:

Length of Storage:

Guidelines for Outplanting / Performance on Typical Sites:

Other Comments:

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 2024/05/01). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.

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