Foundation Partners

Sempervirens Fund


Sempervirens Fund is California’s oldest land trust and the only organization exclusively devoted to permanently protecting the coast redwood forests of the Santa Cruz Mountains. Since its founding in 1900, Sempervirens Fund has protected over 34,000 acres of redwood forest, planted more than 93,000 trees, and built and maintain more than 60 miles of hiking trails.

Sempervirens Fund has been a strong supporter of Castle Rock State Park since its creation in 1968 and recently completed its 37th land protection project to expand and add to the park. The Donor Agreement between Sempervirens Fund and State Parks (with our support), to prevent Castle Rock State Park from closing was signed in May 2012. Sempervirens Fund contributed over $250,000 to keep Castle Rock open and this agreement was extended by State Parks in March 2013 and now ends on June 30, 2014.

Currently, Sempervirens Fund is funding and planning to construct new facilities at Castle Rock that will make the park more inviting, enjoyable, and safer. These improvements will establish Castle Rock as Silicon Valley’s gateway into the Santa Cruz Mountains and the Great Park. For more information on Sempervirens Fund’s plans for Castle Rock, please visit

Save the Redwoods League


Since 1918, Save the Redwoods League has protected and restored redwood forests and connected people with their peace and beauty so these wonders of the natural world flourish. The League purchases land for preservation, supports California State redwood Parks, restores redwood forests and supports original research and education about the redwood ecosystem.

Save the Redwoods League has long supported Portola Redwoods State Park but stepped up their support in a big way in 2012. They signed and financially supported the Donor Agreement which keeps the park open. In addition, they led the acquisition of the Peters Creek Redwood parcel of old-growth Redwoods announced in December 2012. This unmatched stand adjoins Portola Redwoods State Park and we hope at some time it will be added to the park.

Peninsula Open Space Trust


POST is shaping a vibrant ecosystem for Silicon Valley – a network of protected lands that provide scenic beauty, clean air and water, locally grown food, and a place for people and wildlife to thrive. These lands will be preserved forever so that present and future generations can live in harmony with nature, in a careful balance of urban and rural landscapes that make our region extraordinary

Peninsula Open Space Trust joined both of the major engagements to preserve and enhance Portola Redwoods State Park in 2012: POST signed and financially supported the Donor Agreement which keeps the park open. They also teamed with Save The Redwoods League in the acquisition of the Peters Creek Redwoods with their strong financial resources.

Both Save the Redwoods League and Peninsula Open Space Trust have teamed with Portola and Castle Rock Foundation and State Parks to implement a plan for sustainability of Portola Redwoods State Park. This plan includes investment in needed infrastructure improvements, which you can learn more about here.

Recreational Equipment Inc.


REI’s passion for the outdoors runs deep.   Their core mission is to “inspire educate and outfit people for a lifetime of outdoor adventure and stewardship”, which they have been doing since their founding in 1938.   REI encourages active conservation of nature and inspires the responsible use and enjoyment of the outdoors.

Part of REI’s mission is to support community partnerships.    Their partnerships begin with in- store teams, may connect with nonprofits in several ways:

·         Promoting or partnering for events and service projects

·         Raising visibility with REI customers

·         Offering product donations

·         Inviting and selecting the organization for an REI grant

REI provides grants to select nonprofits that care for the outdoor places their customers love. The process begins with their in-store teams, who establish meaningful partnerships with organizations and invite them to apply for funding.   Over the years, REI has provided the Portola and Castle Rock Foundation with generous grants to promote volunteer development and production of educational displays to enhance park visitor’s experience. For more information click here.

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Iverson Trail Rerouted

The Iverson trail is one of the most popular family-friendly trails in Portola Redwoods State Park.  Visitors enjoy the flora changes along the route including riparian to dry oak and […]