California Native Plant Society
Tap map to see plants native to location
Add
Arctostaphylos montana ssp. ravenii
Please enter either the common name or the botanical name of any native California plant species to see it's plant record

Loading....
Presidio Manzanita
  • Added Add to My Plant List
Arctostaphylos montana ssp. ravenii
  

Zoom To My AddressZoom To California Estimated Plant Range




About Presidio Manzanita (Arctostaphylos montana ssp. ravenii) Presidio Manzanita (Arctostaphylos hookeri ssp. ravenii) is a rare native shrub whose only documented location in the wild is in Presidio Park, San Francisco. It is listed by State and federal agencies as an Endangered Species. The U.S. Fish and Wildlife Service says that only one individual of this subspecies remains in the wild and no wild seedlings of this plant have been observed. However, it has been propagated from seeds and cuttings for conservation purposes, and it is sometimes available for garden use. It was formerly classified as Arctostaphylos hookeri ssp. revenii and some sources may still refer to it by that name.
Plant Description
Plant Type
Shrub

Max. Height
2 ft (0.6 m)

Max. Width
5 ft (1.5 m)

Form
Spreading

Dormancy
Evergreen

Flower Color
White

Flowering Season
Spring, Winter
Spring
Summer
Fall
Winter


Native Status
Natural Setting
Site Type
Presidio Park, San Francisco

Sun
Part Shade, Sun

Elevation ?
69' - 878'

Annual Precip. ?
24.3" - 27.7"

Summer Precip. ?
0.27" - 0.33"

Coldest Month ?
49.1° F - 50.9° F

Hottest Month ?
62.0° F - 64.6° F

Humidity ?
1.19 vpd - 9.86 vpd

Soil Description
The sole remaining individual is growing on a serpentine outcrop. However, it appears to be tolerant of normal garden soil.

Drainage
Medium

Companion Plants
This plant can be used with most other northern chaparral plants. However, due to its rarity in the wild, it would be shown to best advantage when used with other plants commonly found in the vicinity of Presidio Park, such as Yerba Buena (Clinopodium douglasii), Oneleaf Onion (Allium unifolium), Sitka Columbine (Aquilegia formosa), California Mugwort (Artemisia douglasiana), Hairy Ceanothus (Ceanothus oliganthus), Blueblossom (Ceanothus thyrsiflorus), Canyon Dudleya (Dudleya cymosa), Mission Bells (Fritillaria affinis), Broadleaf Stonecrop (Sedum spathulifolium),

Landscaping Information
Water Requirement ?
Low
Extremely Low
Very Low
Low
Moderate - High


Popularity
Rarely Used

Max. Summer Water ?
2x/month
No Summer Water
1x/month
2x/month
3x/month
1/week
Keep moist


Common uses
Deer Resistant, Hummingbird Gardens, Bee Gardens

Nursery Availability
Rarely Available

Other Names
Botanical Names
Arctostaphylos hookeri ssp. ravenii


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

Sign in to your Calscape Account X




Once signed in, you'll be able to access any previously saved plant lists or create new ones.

Email Address
Password

Sign In


Copyright © 1999-2014 California Native Plant Society. All rights reserved.