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Tecate Cypress
Hesperocyparis forbesii
  
About Tecate Cypress (Hesperocyparis forbesii) 14 Nurseries Carry This Plant Tecate Cypress (Herpericyparis forbesii) is a species of cypress native to Southern California and Mexico. This is a relict species from a time when southern California's climate was cooler and wetter. It survives in a few, isolated locations in Los Angeles, Orange, Riverside and San Diego Counties, as well as northern Baja. It depends on intermittent fire for reproduction, but too frequent fires kill seedlings and threaten the survival of the species.

The foliage is bright green with reddish bark. Young trees are pyramidal in shape, becoming more rounded or contorted with age. It is very drought adapted; excessive supplemental water will make it floppy. In recent years, Tecate Cypress has become a fairly popular small tree for Southern California gardens. It makes a great specimen tree for larger landscapes, remaining tight and symmetrical.

The northernmost stand, comprising a very large area on the upper limits of Coal Canyon and Sierra Peak in Orange County, California, burned in a 2006 wildfire. Very few mature trees survived, but hundreds, if not thousands, of new plants are appearing as regeneration. Another devastating wildfire before seedlings are able to reach cone-producing age (which can be quite old for this species), could easily extirpate this stand.

Some refer to Tecate Cypress as a variety of Guadalupe Cypress (Cupressus guadalupensis), which occurs on Guadalupe Island, though that island is well over 250 miles from any Tecate Cypress stand. Aside from the ease of surmising that Tecate Cypress is genetically different from Guadalupe Cypress due to the two species being separated by ocean waters, molecular testing has shown the latter to be slightly more closely related to Cuyamaca Cypress (Hesperocyparis stephensonii).

Moreover, Guadalupe Cypress, when mature, makes a much taller and more massive tree than Tecate Cypress. Tecate Cypress has very green foliage, while Guadalupe Cypress has waxy pale, somewhat blueish tinted foliage. Finally, though cones of Tecate Cypress will not open without heat (unlike any other California native Cypress), those of Guadalupe Cypress will open without fire.
Plant Description
Plant Type
Plant Type
Tree

Size
Size
33 ft tall
25 ft wide

Form
Form
Upright

Growth Rate
Growth Rate
Fast, Moderate

Dormancy
Dormancy
Evergreen

Wildlife Supported
 
The Tecate Cypress is the singular host plan for the rare Thorne's Hairstreak butterly (Callophrys gryneus thornei).

Landscaping Information
Sun
Sun
Full Sun

Moisture
Moisture
Low, Very Low

Summer Irrigation
Summer Irrigation
Max 1x / month once established

Nurseries
Nurseries

Ease of Care
Ease of Care
Very Easy

Cold Tolerance
Cold Tolerance
Tolerates cold to -10° F

Soil Drainage
Soil Drainage
Fast, Medium, Slow

Soil Description
Soil Description
Typically metavolcanic soils but also tolerates clay and sand. Soil PH: 5.0 - 8.0

Common uses
Common uses
Bank Stabilization, Hedges, Deer Resistant, Butterfly Gardens

Companion Plants
Companion Plants
In the garden, it can be used with chaparral plants that like relatively dry conditions such as Red Shanks (Adenostoma sparsifolium), Ceanothus spp., Flannelbush (Fremontodendron californicum or mexicanum), Mountain Mahogany (Cercocarpus betuloides), Small-leaf Rose (Rosa minutifolia), and Chaparral Yucca (Hesperoyucca whipplei).

Propagation
Propagation?
Tecate Cypress has serotinous cones, meaning they open after heating from fire. Collect cones by cutting them from the limbs and open cones by boiling them for 30-60 seconds to release seeds. Cool-moist stratify the seeds for 30 days at 34 degrees. Seeds will germinate at 72 degrees after stratification; viability, however, may be low.

Natural Setting
Site Type
Site Type
Scattered mountain sites in the Peninsular Range

Climate
Climate
Annual Precipitation: 11.8" - 26.4", Summer Precipitation: 0.25" - 1.79", Coldest Month: 41.6" - 53.0", Hottest Month: 67.4" - 78.4", Humidity: 1.41" - 25.10", Elevation: 414" - 5422"

Alternative Names
Botanical Names: Callitropsis forbesii,Cupressus forbesii


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora


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