California Festivals
California Arbor Day / Arbor Week
A California State resolution proclaimed March 7-14 as California Arbor Week to coincide with the birthday of horticulturalist Luther Burbank (March 7, 1849-April 11, 1926).
California is home to many superlatives when it comes to trees. The state has the tallest trees in the world, the biggest trees in the world (per circumference and weight), and the oldest in the world. Trees are important to the state. There are more than 160 Tree City USA members in California comprised of municipalities and towns.
Arbor Day occurs on different dates according to their best tree-planting times nationally. In California, we celebrate Arbor Day with events throughout March and April. Here are some events:
ALISO VIEJO: Arbor Day April 24, 2026, 4 p.m. at Canyon View Park
22144 Canyon Vistas
Aliso Viejo, CA
Free, RSVP with Brianna Murray at (949) 243-7750 or bmurray@avca.net.
Help plant 18 trees - Pepper, Jacaranda, and Oak trees along with Scout troops and school organizations.
CALABASAS: Arbor Day Celebration
Saturday, March 21, 2026, 10 a.m.-12 p.m. at Gates Canyon Park
25801 Thousand Oaks Boulevard
Calabasas, CA, 91302
Free, cityofcalabasas.com
Join the City of Calabasas for the Arbor Day tree planting dedicated to
preserving our planet and creating a greener future for generations to come.
CLAREMONT: Arbor Day Celebration
Thursday, March 12, 2026, 11 a.m.-12 p.m. at Blaisdell Park
440 S. College Avenue
Claremont, CA 91711
Free, claremontca.gov
Join the City of Claremont for a special Arbor Day Celebration which starts with
a short ceremony followed by tree planting in the park.
CLOVIS:
Tree Fresno Arbor Day Run/Walk April 25, 2026, 8 a.m. at Clovis Botanical Garden
945 N Clovis Ave.
Clovis, CA 93611
letsdothis.com/us/e/ arbor-day -run-walk-263331
This landmark event marks a 40th Anniversary with the stunning backdrop of the Clovis Botanical Gardens
to commemorate over 55,000 trees planted.
CUPERTINO: Arbor Day and Earth Day Festival Saturday, April 4, 2026, 11
a.m.-3 p.m. at Cupertino Civic Center
10350 Torre Avenue
Cupertino, CA
Free, cupertino.gov
Learn about environmental issues and solutions through hands-on activities, live entertainment, and delicious food served by local food trucks.
Parking is available at City Center Parking Garage located at 20350 Stevens Creek Boulevard, (a quick 6-minute walk to the event). There is no parking at the Civic Center (City Hall, Community Hall, Cupertino Library)
Rideshare drop-off is conveniently located on the corner of Pacifica Drive and Torre Avenue.
ENCINITAS: 15th annual Arbor Day Celebration on Saturday, April 18, 2026, 9
a.m.-12 p.m. at Hawk View Park.
1309 Blue Heron Ave.
Encinitas, CA 92024
Free, encinitasca.gov
The City of Encinitas, a Tree City USA, gives residents the opportunity to make a sustainable impact and contribution to Encinitas growing urban forestry.
Residents are invited to join the City in planting dozens of trees, enjoy family-friendly activities, and engage with educational booths. Tree planting volunteers help plant native species
to increase biodiversity, increase shade, and benefits to future generations visiting Hawk View Park.
Planting participants are asked to wear closed-toed shoes and hats and will need to sign a waiver form.
LA PALMA: Arbor Day Celebration
Tuesday, April 14, 2026, 5 p.m. at La Palma Central Park
7821 Walker St.
La Palma, CA
Free, lapalmaca.gov
Arbor Day crafts, the Arbor Day Tree Sponsorship program, a coloring and poster
contest awards presentation, and, of course, the planting of a new tree in
Central Park.
LOS ANGELES: Arbor Day Celebration March 14, 2026, 9 a.m.-12 p.m.
Los Angeles Sanitization
155 W 69th St.
Los Angeles, CA 90003
Free, ladwp.com
Tree adoptions, volunteerism, a resource fair with City departments and partner community-based organizations, a tree education workshop, and multiple craft activities. LADWP provides hydration units and information about conservation.
ONTARIO: Arbor Day
Wednesday, April 22, 2026, 8 a.m. in Veterans Memorial Park
1257 E. D Street
Ontario, CA
Free but registration required, ontarioca.gov
Join Recreation & Community Services Department and the Parks Department partner
to plant trees in celebration of Arbor Day. Free for all ages.
OROVILLE: Arbor Day Festival Saturday, March 21, 2026, 10 a.m.-4 p.m. at
Oroville Convention Center
1200 Myers Street
Oroville, CA 95965
Free, obgec.com/ arbor-day-festival
Oroville, a Tree City USA, hold an annual one-day festival with performances,
educational presentations, hands-on activities for kids, local vendors, and
opportunities to learn more about caring for our urban forest.
ROHNERT PARK: Arbor Day 2026 March 7, 2026, 9 a.m.-12 p.m. at the Rohnert
Park Community Center
5401 Snyder Park
Rohnert Park, CA
Free, rpcity.org
Help plant trees that will shade the community for generations to come. Bring your gloves and a water bottle. Tools and snacks are provided.
SACRAMENTO: Arbor Day Tree Plantings on March 7, 21, 28, April 4, 2026, 9
a.m.-12 p.m.
Sacramento, CA
sacrtree.org
See website details for planting locations and volunteer opportunities
SAN DIEGO: Arbor Day
Friday, April 24, 2026, 8:15-11:30 a.m. at Gompers Park
4926 Hilltop Drive
San Diego, CA 92102
Free to the public, trees@sandiego.gov
Tree planting registration: sandiego.gov/ event/ arbor-day
The City of San Diego invites you to a day tree planting, beautification
activities and more!
SAN FRANCISCO: Arbor Day Fair Saturday, March 14, 2026, 9 a.m.-1 p.m. at
Francisco Middle School Yard
361 Francisco Street
San Francisco, CA
Free, mobilize.us/ sanfrancisco/ event/ 876411/
Arbor Day Fair features information booths,
bucket truck rides,
kid-friendly games and activities,
build your own planter box and bill out a Fair Passport by visiting 5 vendors
for free ice cream.
SAN FRANCISCO: Neighborhood Beautification Day Saturday, March 14, 2026, 8:30
a.m.-12 p.m.
Francisco Middle School Yard - 361 Francisco Street
Nob Hill
Lower Nob
Hill
North Beach
District 3 neighborhoods
San Francisco, CA
Free but volunteers should sign up in advance: mobilize.us/ sanfrancisco/
event/ 876413/
Department of Public Works (SFDPW), SFUSD, and SF Environment Department are
hosting Neighborhood Beautification where volunteers join teams to plant
trees for approx. 3 hours.
SANTA CLARA: Santa Clara Earth Day/Arbor Day Celebration Thursday, April 2,
2026, 10 a.m.-2 p.m. at Triton Museum of Art
1505 Warburton Ave.
Santa Clara, CA
Free, environment@santaclaraca.gov
Tree climbing demonstration, tree planting ceremony, exhibitor booths promoting
environmental education and a pedestrian rodeo as part of Santa Clara Safe Routes to School Program
are events celebrating the environment, and all are invited.
SANTA ROSA: Arbor Day Tree Planting Party March 14, 2026, 9 a.m.-12 p.m. at Finley Community Park
2060 West College Avenue
Santa Rosa, CA 95401
Arbor Day and Luther Burbank's Birthday are celebrated with the planting of trees in the park!
Remembering the Chinese proverb: The best time to plant a tree was 20 years ago. The next best time is now;
the community tree-planting party and park beautification event emphasizes what makes trees important to our natural and urban environments, and what makes Santa Rosa a Tree City USA! Arbor Day is the birthday of the late famed botanist and Santa Rosa resident Luther Burbank. Wear sturdy shoes for possible muddy conditions
in this rain or shine event.
THOUSAND OAKS: Arbor Day / Earth Day April 18, 2026, 10 a.m.-2 p.m. at
Thousand Oaks Community Center
2525 N. Moorpark Road
Thousand Oaks, CA
Free, toaks.gov/earthday
The City of Thousand Oaks event includes educational workshops on drip
irrigation installation, caring for landscaping in drought, water-wise ground
covers, an electric vehicle display with EV models, kids activities & bounce
house, compost and plant giveaways, raffles, live music, and more.
Events are not guaranteed. It is your responsibility to confirm before going.