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Welcome to the Southern California Horticultural Society,
where passionate gardeners meet to share ideas
and learn from each other

On the second Thursday of each month, we invite speakers to present a talk or program about their area of expertise. We offer in-person meetings as well as live-streaming on Zoom (with registration).

Meetings may also include Plant Sales, a Raffle and expert discussion of plants brought in to the Plant Forum. Do you have an interesting plant to share? If you can't bring one in person, send in a photo and requested information on our Plant Forum Page.

For more information about the Society, please see our About SCHS page.


Thursday,  March 14th, 2024

Exercise in the Hyper-Local:

How the Wallis Annenberg

Wildlife Crossing

is Connecting Critical Habitat

and Supporting Biodiversity

with Landscape Architect,

Robert Rock

Landscape architect Robert Rock will join the Southern California Horticultural Society in person on March 14 to present a program on the massive Wallis Annenberg Wildlife Crossing being built across the 101 freeway in Agoura Hills. Designed by Rock in collaboration with Caltrans and funded through a public-private partnership, the vegetated crossing at Liberty Canyon will provide a safe place for wildlife to cross the freeway, while enhancing and supporting the ecosystem in the surrounding area. 

Throughout his career, Rock has focused on the artful integration of infrastructure and ecology as landscape architecture is increasingly called upon to perform essential functions of the built environment. As CEO of Rock Design Associates, his experience has helped make RDA a leader among firms synthesizing natural, social, and infrastructural systems. 

The Wallis Annenberg Wildlife Crossing is the largest such project in the world, and since 2019, Rock’s work has included the design of, and construction oversight for, the crossing as well as over 13 acres of the adjacent landscape. He will share with us the scope and progress of the project, expected to be completed in 2025. Through RDA’s work, and in coordination with the project partners, including Caltrans, National Wildlife Federation, National Park Service, Resource Conservation District of the Santa Monica Mountains, and Mountains Recreation Conservation Authority, the corridor will restore habitats and an ecosystem to help ensure the survival of many isolated animal and plant species.

Please join us to learn more about this fascinating and significantly impactful environmental project.  Registration is now open at:

Please note that the wildlife crossing depicted in the photo is only a representation, as the Wallis Annenberg Wildlife Crossing is still under construction.

This event will be live/in-person at Friendship Auditorium

Doors open 7:00 p.m.

Plant Forum at 7:15 p.m.

Program at 7:30 p.m.


Upcoming Events:

Thursday, March 14, 2024
Live at Friendship Auditorium
Landscape architect Robert Rock will speak about the Wallis Annenberg Wildlife Crossing.

Friday, April 12, 2024
Live and on Zoom from the Blinn House in Pasadena
2024 Ruth Borun Lecture Series Talk
Brian Kemble of the Ruth Bancroft Gardens will speak on garden plant origins.

Visit our Past Meetings page to re-watch previously recorded in-person meetings and webinars, download each meeting write-up, and reference any materials provided by our speakers.

  • Our Hort Happenings page lists events at local horticultural institutions. 
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Join us today and receive our monthly Newsletter, free admission to regular meetings and discounts on SCHS events. We now have an Online-Only membership option for only $15/year. If you would like to support us without joining, please go to our Donate to SCHS page.

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To renew your membership online, log in and go to your Profile. You will see an option to renew for another year. (Or follow the link when we send you a renewal notice.)

You can always reach us by mail at:

Southern California Horticultural Society
P.O. Box 94476
Pasadena, CA 91109-4476

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