San Bruno Mountain Manzanita

Arctostaphylos imbricata, commonly known as San Bruno Mountain Manzanita, is a species of evergreen shrub native to the coastal ranges of California, specifically found in the San Francisco Peninsula and parts of San Mateo County. This plant typically grows to a height of 1 to 3 meters (3 to 10 feet) and exhibits a dense, bushy form. The branches are often twisted and gnarled, contributing to its distinctive appearance. The bark is smooth and reddish-brown, which can peel in thin strips, revealing a lighter inner bark.

The leaves of Arctostaphylos imbricata are leathery, dark green, and ovate, measuring approximately 2 to 5 centimeters (0.8 to 2 inches) in length. The flowers are small, urn-shaped, and usually white or pale pink, blooming in clusters during the late winter to early spring. These flowers are an important source of nectar for various pollinators, including bees and hummingbirds. Following the flowering period, the plant produces small, round berries that are typically red to purple in color, which serve as a food source for birds and other wildlife.

San Bruno Mountain Manzanita plays a significant ecological role in its native habitat, often forming part of the understory in scrub and chaparral ecosystems. It is well-adapted to the fire-prone environments of California, as it can resprout from its root system after wildfires, a trait that enhances its survival and persistence in such habitats. Additionally, its thick, waxy leaves help reduce water loss, making it well-suited for the dry conditions typical of its range. While primarily valued for its ecological contributions, Arctostaphylos imbricata is also appreciated in horticulture for its ornamental qualities, including its attractive foliage and unique form.