Centromadia fitchii, commonly known as Fitch's tarweed, is an annual herbaceous plant native to California. This species belongs to the Asteraceae family, which includes a vast array of well-known plants like sunflowers and daisies. Fitch's tarweed is a component of California's diverse native flora, contributing to the ecological fabric of its natural habitats. Physically, Centromadia fitchii typically grows to a height ranging from 20 to 100 centimeters. Its growth habit is erect and branched, often presenting a somewhat bushy appearance. The stems are generally hairy and can be sticky, a characteristic that contributes to the common name "tarweed." The leaves are arranged alternately along the stem. They are typically linear to lanceolate in shape, with entire or toothed margins. The leaves are often hairy and may also exhibit a sticky texture, particularly the upper leaves. The plant produces composite flower heads characteristic of the Asteraceae family. Each flower head consists of ray florets and disc florets. The ray florets are typically yellow, while the disc florets are also yellow and form the central part of the flower head. The flower heads are usually borne singly at the tips of branches or in loose clusters. Following flowering, the plant develops fruits, which are achenes. These achenes are typically crowned with a pappus, a modified calyx that aids in wind dispersal. The native range of Centromadia fitchii is restricted to California, where it is found in several counties. It typically inhabits open, disturbed areas, grasslands, and open woodlands. Its preferred habitats often include serpentine soils, which are known for their unique mineral composition and support specialized plant communities. Fitch's tarweed is adapted to the Mediterranean climate of California, with dry summers and wet winters. Cultivation requirements for this species are not widely documented for horticultural purposes, as it is primarily of ecological interest rather than a commonly cultivated ornamental. However, its native habitat suggests a preference for well-drained soils and full sun exposure. Centromadia fitchii plays a role in its native ecosystem. As an annual, it completes its life cycle within a single growing season, contributing to soil turnover and providing a food source for various insects and other wildlife. While not recognized for significant ornamental, agricultural, medicinal, or culinary uses, its presence is important for maintaining the biodiversity of its native habitats. Interesting adaptations of Fitch's tarweed include its sticky nature, which may serve as a defense mechanism against herbivores or aid in trapping small insects. The plant's ability to thrive in challenging soil conditions, such as serpentine soils, highlights its ecological resilience. Its life cycle as an annual allows it to colonize open areas and reproduce efficiently in its native environment.