Events

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

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

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

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

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

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

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

Join 350 Contra Costa Action on April 16 for our first Community Climate Forum! This re-imagined version of our Climate Circle is a FREE online event that brings together community members every other month for a one-hour online conversation focused

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

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

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

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

Michael Marchiano returns with fascinating stories and information about the plant and animal life around this area. He begins this year’s series with photos and information about the beautiful wildflowers found on Mt. Diablo.

REGISTER HERE

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

Discover opportunities for engagement with solutions to the climate crisis for students, faculty, industry, and local government. Climate Solutions Now elevates the climate work being done in education and communication, policy development, technolog