Quercus parvula var. shrevei, commonly known as Shreve’s Oak, is an evergreen tree native to the chaparral and woodlands of the coastal mountain ranges of California, from Eureka down to Santa Barbara County. It is typically found at elevations ranging from sea level to 5,000 feet. This species can grow up to 72 feet tall and is characterized by its dark-green, thick, and often spiny-toothed leaves. The male flowers are presented on catkins, while the female flowers are found in leaf axils, leading to the production of 0.5-1 inch long acorns that mature in about 18 months. Shreve’s Oak is notable for its ability to hybridize with the California black oak (Quercus kelloggii).

Shreve’s Oak is valued for its drought tolerance and ability to thrive in the dry, often nutrient-poor soils of its native habitat. It is used in native plant gardens, natural landscaping, and habitat restoration projects. The tree’s dense foliage provides cover for wildlife, and its acorns are a food source for various animals. In cultivation, it requires minimal water once established, prefers well-drained soils, and can tolerate full sun to partial shade. While it is not commonly used for timber due to its limited size and distribution, the wood is sometimes utilized for fuel. Gardeners should be aware that the tree’s acorns and leaves can create litter, and its roots may be competitive with other plants.CC BY-SA 4.0