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Past Events (1908)

Date range
April 24, 2026
Friday
  • Earth Day Farm Festival - Pacifica Garden in Bay Point

  • Apr 24, 2026 from 2:30pm to 5:30pm
  • Location: Pacifica Garden Farm, on the campus of Rio Vista Elementary
  • Description:

    Join us at our 1-acre Bay Point farm for a Friday afternoon of outdoor activities celebrating healthy living and our connection to Earth!

    Come harvest, plant, taste, and cook with us. We’ll have tours, music, health stations, and a nopales photo

  • Created by: Sustainable Contra Costa
April 23, 2026
Thursday
  • Pleasant Hill Earth Day Celebration

  • Apr 23, 2026 from 5:00pm to 7:00pm
  • Location: Pleasant Hill City Hall, 100 Gregory Lane
  • Description:

    Celebrate Earth Day in Pleasant Hill with an evening of environmental awareness and activities. Over a dozen groups will be in attendance with a variety of demonstrations, activities and information all based around Earth Day.  Vendors/activities inc

  • Created by: Sustainable Contra Costa
April 20, 2026
Monday
  • Go Green with Greywater

  • Apr 20, 2026 at 12:00pm to Apr 21, 2026 at 1:00pm
  • Location: Online webinar
  • Description:

    Learn how to recycle household greywater from showers, sinks and washing machines for irrigation.  As temperatures rise and droughts worsen, greywater reuse can offer an affordable, low-energy solution to keep landscapes green and productive during t

  • Created by: Sustainable Contra Costa
April 19, 2026
Sunday
  • Hike: Briones in Bloom

  • Apr 19, 2026 from 10:00am to 3:00pm
  • Location: Briones Regional Park, Bear Creek Staging Area
  • Description:

    Celebrate Earth Day on a delightful hike featuring wildflowers and great views!

    Briones Regional Park has ridges and valleys that support fairly diverse habitats, including grasslands, oak woodlands, and riparian forest. The middle part of the h

  • Created by: Sustainable Contra Costa
April 18, 2026
Saturday
  • John Muir Birthday­–Earth Day

  • Apr 18, 2026 from 10:00am to 4:00pm
  • Location: John Muir National Historic Site, Martinez
  • Description:

    Celebrating John Muir’s 188th birthday, the 56th Anniversary of Earth Day and the National Park Service Centennial, plus the 71st Anniversary of the John Muir Association

    Live music, historic re-enactments, dozens of exhibitors.

    Admission and parking

  • Created by: Sustainable Contra Costa
 
  • Great Tomato Plant Sale

  • Apr 18, 2026 at 9:30am to Apr 22, 2026 at 3:00pm
  • Location: Demonstration gardens in Walnut Creek & Antioch
  • Description:

    The tomato plant sale is back! The Contra Costa Master Gardeners will have many varieties of seedlings for you to take home and grow.

    • 70+ varieties of tomatoes, plus peppers, eggplants, squash and more
    • All plants are $4.00
    • All sales are Visa, Master
  • Created by: Sustainable Contra Costa
 
  • Keep Antioch Beautiful

  • Apr 18, 2026 from 9:00am to 12:00pm
  • Location: Various Antioch locations
  • Description:

    From Earth Day to Arbor Day, let's work together to build a stronger, cleaner, more beautiful Antioch! Starting Earth Day, join us as we begin our service to the community. Gather friends and family to brainstorm a beautification project for your hom

  • Created by: Sustainable Contra Costa
 
  • Earth Month Guided Facility Tour

  • Apr 18, 2026 from 8:00am to 10:00am
  • Location: Mt. Diablo Recycling
  • Description:

    During this guided Earth Month tour, you’ll go behind the scenes at Mt. Diablo Resource Recovery and gain rare access to areas most people never see. See firsthand how we collect and process materials, and maximize recycling while minimizing landfill

  • Created by: Sustainable Contra Costa
April 17, 2026
Friday
  • Green Movie Night -

  • Apr 17, 2026 from 6:30pm to 9:00pm
  • Location: Walnut Creek United Methodist Church
  • Description:

    Join us for our 2026 Earth Day Celebration as the Green Movie Night series presents a screening of the impactful documentary The Story of Plastic.

    Presented in collaboration with Sustainable Walnut Creek, this thought-provoking film explores the glob

  • Created by: Sustainable Contra Costa
April 16, 2026
Thursday
April 11, 2026
Saturday
  • Pollinator & Friends Day

  • Apr 11, 2026 from 10:00am to 4:00pm
  • Location: Ruth Bancroft Gardens, Walnut Creek
  • Description:

    Join us for a celebration of pollinators and their friends at the Ruth Bancroft Garden! Learn how you can help protect them and their habitats in your own garden and beyond.

    This drop-in community day is free to attend in the Plaza and Great Room, wh

  • Created by: Sustainable Contra Costa
 
  • Spring Expo & Plant Sale

  • Apr 11, 2026 from 10:00am to 4:00pm
  • Location: Rodgers Ranch Heritage Center, Pleasant Hill
  • Description:

    Spring is here—join Rodgers Ranch for their Annual Spring Expo! Hosted by the Urban Farm at the Rodgers Ranch Heritage Center, this spring favorite is more than a plant sale—it’s a community event. Find locally grown, high-quality plants, explore off

  • Created by: Sustainable Contra Costa
March 29, 2026
Sunday
  • Common Birds of Contra Costa County

  • Mar 29, 2026 from 1:00pm to 2:30pm
  • Location: Rodgers Ranch Heritage Center, Pleasant Hill
  • Description:

    Join Naturalist and Audubon trip leader, Michael Marchiano for a presentation on common birds of Contra Costa County. Having backyard bird feeders and attending “birding walks” is becoming a main stream hobby for many people. Whether a novice, begi

  • Created by: Sustainable Contra Costa
March 28, 2026
Saturday
  • Free Virtual Home Composting Workshop

  • Mar 28, 2026 from 10:00am to 12:00pm
  • Location: Online webinar
  • Description:
    Learn how easy it is to make compost in your backyard from household food scraps, leaves and yard trimmings.
     

    A FREE virtual home composting workshop. Discover how practically anyone can learn to compost or improve their existing compost techniq

  • Created by: Sustainable Contra Costa
March 21, 2026
Saturday
  • West Contra Costa Repair Fair

  • Mar 21, 2026 from 1:00pm to 3:00pm
  • Location: Hercules Library, 109 Civic Drive
  • Description:

    Do you live in West Contra Costa and have a lamp, small appliance, textile, or bike in need of repair?

    Bring it to the Repair Fair!

    Volunteers and specialized repair professionals will be on-hand to repair your items.  We ask that you stay with your

  • Created by: Sustainable Contra Costa
March 14, 2026
Saturday
  • Pittsburg Repair Workshop

  • Mar 14, 2026 from 10:00am to 1:00pm
  • Location: Pittsburg Senior Center 300 Presidio Lane Pittsburg CA94565
  • Description:

    Give Your Beloved Items a Second Life!

    Is your favorite shirt missing a button? Broken lamp got you in the dark? Coffee frother lost its magic? Don't toss them – fix them for FREE at Pittsburg Repair Workshop!

    Our skilled Repair Coaches are ready to

  • Created by: Ozge Altunsoy
  • Tags: repair workshop
February 27, 2026
Friday
  • Green Movie Night - "Alaska Gold"

  • Feb 27, 2026 from 7:00pm to 9:00pm
  • Location: Church of the Resurrection, 399 Gregory Lane, Pleasant Hill
  • Description:

    The Green Movie Night series presents a screening of the powerful documentary, "Alaska Gold."

    The Bristol Bay region of southwest Alaska is home to the last great wild sockeye salmon fishery in the world. It’s also home to enormous mineral deposits e

  • Created by: Sustainable Contra Costa