Trees Active during the day

California bay

Umbellularia californica

iNaturalist Wikipedia

The California bay is the pungent sentinel of Western forests, known for its spicy aroma and dense evergreen canopy. A cornerstone of the Pacific coast, it provides food and shelter for a vast array of backyard wildlife.

0 Sightings

0 Habitats

Quick Identification

straighten

Size

Typically 12-25 meters (40-80 feet) tall, but can reach 30 meters (100 feet) in ideal conditions.

palette

Colors

Glossy dark green leaves, grayish-brown bark, and yellowish-green flower clusters.

visibility

Key Features

Intensely aromatic leaves that smell spicy when crushed
Long, lance-shaped leaves with smooth edges
Small, round fruit that turns from green to dark purple
Dense, rounded crown providing deep shade

When You’ll See Them

schedule

Activity pattern Active during the day

brightness_5

Peak hours Daylight hours for best visibility

calendar_month

Season Year-round, with flowering in late winter and fruiting in autumn

restaurant

Diet As a primary producer, it creates energy via photosynthesis; it absorbs water and essential minerals like nitrogen and phosphorus from the soil through a deep root system.

park

Habitat Coastal forests, riparian corridors, rocky canyons, and oak woodlands.

public Geographic range

Where Does the California bay Live?

Native to the western coast of North America, the California bay thrives in the Mediterranean climate of the Pacific seaboard. Its core range extends from the Umpqua River valley in southern Oregon down through the California Coast Ranges and the foothills of the Sierra Nevada, reaching into the northern reaches of Baja California, Mexico. It is most commonly found in moist, shaded canyons and along permanent water sources where it can keep its roots cool.

Basemap © OpenStreetMap contributors

2 Countries

320K km² Range

Least Concern Conservation

US United States MX Mexico

Elevation range

0 m1,000 m2,000 m4,000 m

Sea level – 1,600 m

eco

iNaturalist / Verified observation data

View on iNaturalist open_in_new

Explore more Trees arrow_forward

Behavior

The California bay, also known as the Oregon myrtle or pepperwood, is a hardy and long-lived evergreen that plays a vital role in its ecosystem. Unlike many other forest trees, it is highly adaptable, growing as a multi-stemmed shrub in dry, rocky areas or a massive, single-trunked giant in moist river valleys. It is famous for the chemical compound umbellulone in its leaves, which gives off a powerful, spicy aroma that can actually cause headaches if inhaled too deeply—earning it the nickname 'Headache Tree.'

This tree is a resilient survivor; it can resprout from its base after a wildfire and is often one of the first trees to reclaim disturbed ground. For humans, it provides beautiful 'myrtlewood' for woodworking and culinary leaves that serve as a potent (and much stronger) alternative to the traditional Mediterranean bay leaf. In the wild, its dense canopy offers critical nesting sites for birds and cooling shade for woodland mammals during the hot California summers.

photo_camera EverydayEarth exclusive

Camera Tips

To capture the best wildlife action around a California bay, position your camera to face the ground near the base of the trunk during the late autumn months. This is when the tree drops its 'bay nuts'—fatty, avocado-like drupes. These are a high-calorie feast for squirrels, dusky-footed woodrats, and even mule deer. Setting your camera to a low angle will capture these foragers as they scramble to collect the fallen fruit before it rots or is taken by competitors.

Because the California bay has such a dense, dark canopy, lighting can be a challenge. Try to place your camera on the edge of the dripline where natural sunlight can penetrate the foliage, or use a camera with a high-quality infrared flash for clear nighttime shots. The tree's aromatic bark and low-hanging branches often serve as 'rubbing posts' for deer or scratching posts for bobcats; look for areas of the bark that appear smoother or discolored and aim your camera there at about 2-3 feet off the ground.

If you are interested in birdlife, mount your camera higher up (6-10 feet) facing a sturdy horizontal branch. Band-tailed pigeons and various scrub jays are frequently seen navigating the branches to reach the fruit. During the early spring (February-March), the clusters of yellow flowers attract a variety of pollinators and insect-eating birds. Use a fast shutter speed to capture the quick movements of these visitors against the dark green backdrop of the evergreen leaves.

Similar Species

Species that look similar or are commonly confused with California bay.

Bay Laurel

The Mediterranean bay laurel has shorter, more oval leaves and a much milder scent compared to the intense spice of the California bay.

Pacific Madrone

Madrone has reddish, peeling bark and clusters of red berries, whereas the California bay has grayish-brown bark and green/purple drupes.

Browse all Trees arrow_forward

Frequently Asked Questions

While the tree is stationary, wildlife visitors are most active during the day for birds and squirrels, while deer and woodrats visit the tree most frequently at dawn and dusk to forage on fallen nuts.

The best way to attract wildlife is to leave the fallen 'bay nuts' on the ground during autumn. These fatty seeds are a primary food source for local rodents and birds. Keeping the area under the canopy undisturbed provides a safe, shaded 'cool zone' that animals will naturally frequent during hot weather.

Many species, including squirrels, woodrats, and jays, eat the seeds (nuts) inside the fruit. Some insects feed on the leaves, and deer may occasionally browse the young shoots, though the high oil content in the leaves makes them unpalatable to many herbivores.

Yes, they are very common in suburban neighborhoods throughout coastal California and Oregon, often used as shade trees or found growing naturally along creeks and greenbelts.

You can tell them apart by the scent and shape; California bay leaves are longer and more lance-shaped than the oval Mediterranean bay laurel. Also, the scent of the California bay is significantly more intense and 'peppery' when the leaf is crushed.

Record California bay at your habitat

Connect a camera to start building your own species record — AI identifies every visitor automatically.

Join free Identify a photo