Dedicated to the preservation of California's native plants

The mission of the California Native Plant Society is to increase understanding and appreciation of California’s native plants and to conserve them and their natural habitats through education, science, advocacy, horticulture and land stewardship.



Chapter Support for Budding Botanists

Your SLO CNPS chapter recognizes the importance of helping students begin their careers in botany. Several years ago, the Malcolm McLeod Scholarship was established to help graduate students fund their research with scholarships in the $300‐$1000 range.... read more

Seed Exchange Reminder

Hopefully many of you are remembering that we will have our first seed exchange before the October meeting. If you are interested in participating, now is the time to start closely observing your plants for seed formation and maturation. I have already started taking a... read more

San Luis Obispo SOD BLITZ – 2016

San Luis Obispo – May 20, 21, 22, 2016
(Friday, Saturday, Sunday)

Sudden Oak Death (SOD), a serious exotic disease, is threatening the survival of tan oak and several oak species in California. Currently SOD is found in 14 coastal California counties, from Monterey to Humboldt.

About SOD in California

Researchers have discovered that Phytophthora ramorum, the pathogen that causes SOD, spreads most often on infected California bay laurel leaves. Some management options are available, but they are effective only if implemented before oaks and tan oaks are infected; hence, timely detection of the disease on bay laurel leaves is essential for a successful proactive attempt to slow down the SOD epidemic.

This is a great opportunity to participate in a state-wide, very successful citizen science program. None of the samples collected in 2013, 2014, and 2015 were positive for SOD. But, it is very important to continue the monitoring to ensure this disease does not appear in SLO County or to manage the disease if we do get a positive result.

Purpose of SOD BLITZ

The SOD-blitz is to inform and educate the community about the disease and its effects, get locals involved in detecting the disease, and produce detailed local maps of disease distribution. The map can then be used to identify those areas where the infestation may be mild enough to justify proactive management.

  • A community meeting/training session held on a Friday evening followed by collection of leaf samples by volunteers on Saturday and
  • Samples and accompanying forms are then turned in at a central location
    Saturday and Sunday afternoon/evenings.
  • We will provide a list of recommended areas for sampling at the meeting.
  • We will divide into groups for collecting. Ideally, one person in a group will have a GPS device or tablet
    or phone with GPS capability.


Training – Friday, May 20, 6 pm to 7-7:30pm, SLO County Department of Agriculture, 2156 Sierra Way, San Luis Obispo, CA Map Link

Collecting – Saturday and Sunday, May 21 and 22 (Locations TBD). Individuals or teams determine the collecting/days times. All of the materials necessary for the training and the collecting over the weekend will be provided.

If you need additional information on the SLO SOD Blitz, please contact Lauren Brown: , (805)460-6329 or (805)570-7993

Conservation: GND

Guadalupe-Nipomo Dunes Lauren Brown crafted our chapter’s comments on the Guadalupe-Nipomo Dunes (GND) Draft Comprehensive Conservation Plan (CCP) and Environmental Assessment(EA). The CNPS SLO Chapter fully supports the proposed management Alternative B... read more

April in Pinnacles National Park

Diana and I spent a Sunday in early April this year, visiting the Pinnacles National Park from the west side, near Soledad, CA. It was a drizzly day, making the rock formations appear surreal – larger than life. If you have not walked the park, the trails are wide and... read more
Manzanita in the Garden

Manzanita in the Garden

The prune-ability of Arctostaphylos has been well known in the nursery industry for many years.  I’m going to discuss my experience with the species I’m most familiar with, Arctostaphylos morroensis.  The Morro bay manzanita grows in and around the Los Osos area. It... read more


Sun Mon Tue Wed Thu Fri Sat
Chapter Meeting: Diversity and Evolution of California’s Bountiful Borages 7:00 pm
Chapter Meeting: Diversity and Evolution of California’s Bountiful Borages @ SLO Vet's Hall
May 5 @ 7:00 pm
Chapter Meeting: Diversity and Evolution of California's Bountiful Borages @ SLO Vet's Hall | San Luis Obispo | California | United States
Diversity and Evolution of California’s Bountiful Borages “Diversity and Evolution of California’s Bountiful Borages”  by C. Matt Guilliams, the Ken and Shirley Tucker Plant Systematist and curator of the Clifton F. Smith Herbarium at the[...]
Some Consequences to Adapting to Desert Life, Jim Mausseth 7:00 pm
Some Consequences to Adapting to Desert Life, Jim Mausseth @ Cal Poly Building 180, Room 10
May 12 @ 7:00 pm
Some Consequences to Adapting to Desert Life, Jim Mausseth @ Cal Poly Building 180, Room 10
This talk is being held on May 12th at 7:00 pm on the Cal Poly campus in Building 180, Room 101 (see map below). The nearest parking lots to that building are A1, H4, and R1[...]
Santa Margarita Lake 9:00 am
Santa Margarita Lake @ River Road access of Santa Margarita Lake
May 15 @ 9:00 am
Santa Margarita Lake @ River Road access of Santa Margarita Lake
Sunday, May 15, 9 am, Santa Margarita Lake Join this Sierra Club, California Native Plant Society, and Morro Coast Audubon Society field trip at the River Road access of Santa Margarita Lake Expect to see[...]
SOD Blitz Training 6:00 pm
SOD Blitz Training @ SLO County Department of Agriculture
May 20 @ 6:00 pm – 7:30 pm
Please see the SOD Blitz section of our website for more information or please contact Lauren Brown: , (805)460-6329 or (805)570-7993
SOD Blitz Collecting
SOD Blitz Collecting @ SLO County
May 21 – May 22 all-day
Please see the SOD Blitz section of our website for more information or please contact Lauren Brown: , (805)460-6329 or (805)570-7993
Tequepis Trail 9:30 am
Tequepis Trail @ Tequepis Trail trailhead
May 21 @ 9:30 am
Tequepis Trail @ Tequepis Trail trailhead
Saturday, May 21, 9:30 am Tequepis Trail, Santa Barbara County The Tequepis Trail begins on the south of Hwy 154 near the entrance to Lake Cachuma and ascends the north face of the Santa Ynez[...]

June and Linda working the CNPSSLO booth at a local event

  • Black -tailed deer copyright Marlin Harms
    Gardening in deer-prone areas
  • manzanita c Marlin Harms
    California Native Plants for Your Garden
  • By Andy Murray (New Zealand honey bee on clover) [CC BY-SA 2.0 (], via Wikimedia Commons
    Honeybees and Native Plants
  • submit your photo
    Opening the World through Journaling
  • copyright marlin harms
    Native Plants with Fragrance
  • mountain bluebird c Marlin Harms
    California Native Plants that Attract Birds
  • California Wildflower
    Layia platyglossa
  • Schoenoplectus californicus
  • Wild and Domesticated Oats (Avena spp.)
    Avena fatua & A. barbata
  • Stachys bullata
  • Atriplex watsonii
  • Beach sun cups illustration
    Camissonia cheiranthifolia
  • Monolopia lanceolata
  • Ice Plant illustration, copyright Bonnie Walters
    Carpobrotus chilensis and C. edulis
  • Penstemon heterophylla
  • Urtica dioica
  • Ramalina menziesii
  • Umbellularia californica
    Umbellularia californica
  • California Polypody illustration by Bonnie Walter
    Polypodium californicum
  • Quercus douglasii
  • Amanita phalloides
  • Asparagus asparagoides illustration by Bonnie Walters
    Asparagus asparagoides
  • Flannel Bush (Fremontodendron californicum)
    Fremontodendron californicum
  • Calystegia macrostegia
  • Silene laciniata
  • Bush Poppy (Dendromecon rigida)
    Dendromecon rigida
  • Bermuda grass
    Cynodon dactylon
  • Arctostaphylos - manzanita
    Mystery Manzanita in the Elfin Forest
  • vernal pools illustration
    Vernal Pool with Downingia
  • Filaree illustration
    Erodium moschatum
  • Valley Oak Snag
  • Calandrinia ciliata
  • spear orache
    Atriplex patula
  • creek dogwood
    Cornus sericea
  • Oval Leaved Snapdragon (Antirrhinum ovatum)
    Antirrhinum ovatum
  • Kellogg Oak
    Quercus Kelloggii
  • Cucurbita palmata
    Cucurbita palmata
  • Oenothera deltoides
    Oenothera deltoides


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