Arctostaphylos (catalinae)

Michael Herrera Nursery Manager Catalina Island Conservancy PO Box 2739 Avalon, California 90704 (310) 510-2904 (310) 510-3157 (fax) mherrera@catalinaconservancy.org www.catalinaconservancy.org

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Family Scientific Name:	Ericaceae
Family Common Name:	Heath Family
Scientific Name:	Arctostaphylos catalinae P.V. Wells
Common Name:	Catalina manzanita
Species Code:	ARCCAT
Ecotype:	Catalina Island, California
General Distribution:	Catalina manzanita is an infrequent, endemic species found on the island. It inhabits chaparral, typically on north and east faing slopes facing the channel.
Propagation Goal:	plants
Propagation Method:	vegetative
ProductType:	Container (plug)
Stock Type:	4 inch pot
Time To Grow:	1 Years
Target Specifications:	Height: N/A<br> Caliper: N/A<br> Root System: Firm Root Plug in container.
Propagule Collection:	Cuttings are collected in late January from non-flowering shoots.
Propagule Processing:	Cuttings are trransported back to nursery same day of collection and kept cool and moist in plastic bags in a refrigerator at 40 F until treated. We treat cuttings within a few days after collection.
Pre-Planting Treatments:	Tip cuttings are recut to 3 to 4 inch lengths and are wounded on one or both sides of stems to encourage rooting. We dip the cuttings into a Physan fungicide solution. We apply Hormex (#3 or #8) rooting powder to base of cuttings and lateral wounds. We stick cuttings into 100% Kellogg horticultural sand rooting medium in deep flats and place them under intermittent mist.
Growing Area Preparation/ Annual Practices for Perennial Crops:	The James H. Ackerman Native Plant Nursery is located on Catalina Island off the coast of southern California. From 1993 to 2004, the average maximum and minimum temperatures have been 75.4 F and 46 F, with an average of 361 frost free days per year and annual rainfall of 14 inches. The facility is comprised of shade houses, mist propagation house, and an outdoor growing compound. All propagation environments are utilized at different stages of seedling growth to provide for the variance in temperature and shading requirements needed during the growing season. We irrigate all containers with an overhead emitter system in the shadehouses and use a drip system or hand water in the outdoor nursery.
Establishment Phase:	Misting intervals are set depending on current weather conditions. Cuttings began rooting in mid-June. Rooting percentages averaged 13% using #3 and #8 Hormex powder.
Length of Establishment Phase:	5 months
Active Growth Phase:	After cuttings are well established with several roots, they are transplanted into individual containers filled with a growing medium of 4:1:1 (v:v:v) peat, perlite, and organic compost. Osmocote time release fertilizer (9 mo release rate) (14 N:14P2O5:14K2O) is incorporated into the medium at a rate of of 1/2 cup per .75 cubi yards of medium. By late October, rooted cuttings are shifted into #1 treepot (173 cubic inch) containers.
Length of Active Growth Phase:	6 months
Hardening Phase:	Any nursery stock grown under shadehouse conditions are hardened by placing them in full sun exposure for a minimum of 2 weeks prior to outplanting.
Length of Hardening Phase:	2 to 4 weeks
Harvesting, Storage and Shipping:	Containerized cuttings are over wintered directly in the open growing compound.
Length of Storage:	Variable, depends on outplanting date
Other Comments:	Cuttings collected in April and October failed to root.

Citation:

Serrill, Doug; Herrera, Mike; Takara, Janet. 2006. Propagation protocol for production of Container (plug) Arctostaphylos catalinae P.V. Wells plants 4 inch pot; Catalina Island Conservancy Avalon, California. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/04/05). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.