4. Native Fauna and Flora

4. Native Fauna and Flora


Learn more about the Tri-Valley's natural surroundings. Our 7-acre park is home to a variety of native plants, reptiles, mammals and birds.

1. Valley Oaks

It's estimated that the Valley Oaks here could be up to 300 years old. The prevalence of these trees was an important feature in Ohlone life: they gathered acorns and processed them for a variety of foods.

While these acorns aren't the most appetizing, the Valley Oaks could always be counted on to provide when the Black Oaks did not produce its tastier acorns in abundance.

2. Oak Galls

Can you spot a yellowish/brown ball growing in the oak trees? These are called galls, which is a swelling of the oak tree as a result of insects or mites, such as cynipids (also known as gallwasps).

Oak galls were used by Native Americans for pigments, and Spanish explorers used them to make ink for maps and other documents.

3. Native Plants

Many plants native to California grow at the park. Some of them include: Reed Grass; Valley Oaks; Toyon; California Walnuts; Mexican Bush Marigold; California Wild Rose; Blue Elderberries; and if you come during the right season, California Poppies.

How many of these did you spot?

4. Birding

With its proximity to the Pleasanton Ridge and an abundance of trees, bird-lovers everywhere can enjoy the birding opportunities at our premises.

Bring some binoculars, and join us for our seasonal Coffee with the Birds program.

5. Views of the Valley

There's a reason why local photographers shoot in our picturesque location so often!

The Alviso Adobe enjoys commanding views of the Tri-Valley, Mount Diablo, and Brushy Peak. The latter two peaks both have spiritual significance to Native American tribes.

6. Bee and Butterfly Garden

Our Bee and Butterfly Garden can be found on the northern side of our park. The garden's flowers attract bees: many of which live in the hives behind the garden.