Butte County Western Rosinweed

Calycadenia oppositifolia, commonly known as Butte County Western Rosinweed, is a perennial herb native to the grasslands and open woodlands of California’s Sierra Nevada foothills. This species typically grows to a height of 30 to 90 centimeters, forming a rosette of narrow, linear leaves that are often covered in a sticky resin, which gives the plant its common name. The flowering period occurs from late spring to early summer, producing striking yellow flowers that are arranged in dense clusters atop slender, upright stems. These flowers attract a variety of pollinators, playing a crucial role in the local ecosystem by supporting bee populations and other insects.

The fruit of Calycadenia oppositifolia is a small, elongated achene that is dispersed by wind, aiding in its propagation across its native range. This species exhibits adaptations to its environment, such as drought tolerance and the ability to thrive in poor soil conditions, making it a resilient addition to its habitat. While primarily valued for its ecological contributions, it also has potential uses in native landscaping and restoration projects, offering a unique aesthetic with its vibrant blooms and distinctive foliage. Its ability to withstand dry conditions makes it an excellent choice for xeriscaping and low-maintenance gardens.