Creekside Science

Archive for the ‘Restoration’ Category

New endangered San Mateo thornmint colonies seeded at Edgewood Natural Preserve

In Restoration on January 11, 2016 at 2:01 pm


On December 4, 2015, Creekside staff and Edgewood volunteers seeded three additional colonies of federal- and state-endangered San Mateo thornmint at Edgewood Natural Preserve. These additional colonies are key to preventing extinction of this annual forb which exists in the wild only at one additional colony at Edgewood. Funding for this project has been generously provided by the Friends of Edgewood.


By January 8, 2016, all 80 square meter plots had some germinated thornmint in them.



Castilleja affinis neglecta seeded at Coyote Ridge and the Creekside Growing Facility

In Restoration on December 8, 2015 at 1:51 pm

On November 23, 2015, Creekside staff experimentally seeded federally endangered Castilleja affinis neglecta to enhance the Paintbrush Canyon population at Coyote Ridge. Plots will compare different seeding densities, irrigation, and stratification treatments against a control.


A seed increase project continues at the Creekside Growing Facility, where Castilleja are grown with Achillea millefolium hosts. Seeding is the preferred method of restoration while concerns about Phytophthora or other pathogens in nursery stock exist. On December 3 and 8, 2015, a total of 2100 seeds were planted at the facility.



Medusahead Treatments Showing Success

In Restoration, Stewardship on June 9, 2014 at 4:34 pm

creekside pano of medusahead mow at edgewood 2014 smlWe are very excited to publicly report that our medusahead (Taeniatherum caput-medusae (L.) Nevski) treatments at Edgewood Preserve have been an enormous success. Our treatments started in 2009 with medusahead infestations spanning some 5-6 acres of the preserve grasslands.  As we completed our 2014 seasonal mow, staff botanists observed only a few individuals throughout the treatment area. Our timed mowing has been extremely successful in reducing the invasive by > 99% according to our annual monitoring which occurs before any mowing.


ARS photo: Brett Bingham

The Friends of Edgewood have volunteered many hours in order to help reduce resprouts and find new nascent foci and make our efforts even more successful. Thanks to San Mateo County Parks, Friends of Edgewood and all our partners for the great work. We will continue to monitor the site to ensure medusahead is (hopefully) eradicated from the site! 

Native Prairie Restoration in Woodside

In Restoration on January 25, 2013 at 6:55 am

Lupine seed collection THPAWWe have been working on quite a few sites on the San Francisco Peninsula over the years. Certainly, Bay Checkerspot Reintroduction work at Edgewood County Park and Natural Preserve anchors our resume, but we also have worked on a rich palette of other rare and endangered species associated with grassland/prairie sites. The following project represents the culmination of 5 years of trial and error, most of which has been filled with success, and of course, gregarious spring wildflowers (lupine – goldfields meadows with freshly germinating grasses.) Read the rest of this entry »

Creekside Restoration, literally, San Mateo County

In Restoration on July 11, 2012 at 2:55 pm

Creekside has been working on rehabilitating a drainage in San Mateo county. Our project goals are to stabilize the slope the with a mix of woody perennials and mat-forming grasses. Here you can see our willows established and flourishing on site once we constructed some light duty cages to deter summer browsing. This was the first year these trees flowered.