Coreopsis leavenworthii, commonly known as Leavenworth's Tickseed, is a perennial herbaceous plant native to the southeastern United States, particularly Florida. It is a member of the Asteraceae family, which includes daisies and sunflowers, and is recognized for its cheerful, daisy-like flowers. This species holds significance as a native wildflower, contributing to the biodiversity of its natural ecosystems and serving as an attractive ornamental plant for gardens. Leavenworth's Tickseed typically grows as a clump-forming perennial, reaching heights of approximately 1 to 3 feet (30 to 90 cm). Its growth habit is upright and somewhat bushy. The leaves are primarily basal, often appearing somewhat spoon-shaped or spatulate, and are typically entire or shallowly toothed. The stems are slender and bear the characteristic composite flower heads. Each flower head consists of ray florets, which are the prominent, petal-like structures, and disc florets in the center. The ray florets of Coreopsis leavenworthii are a vibrant yellow, radiating outwards from the central disc, which is usually darker in color. The plant flowers prolifically, often from spring through fall, providing a long season of color. Following flowering, the plant produces small, dry fruits known as achenes, which are characteristic of the Asteraceae family. These achenes are often dark and may have a slightly bristly appearance, giving rise to the common name "tickseed" due to their resemblance to tiny ticks. The native range of Coreopsis leavenworthii is primarily confined to the state of Florida, where it thrives in specific natural habitats. It is commonly found in moist to wet prairies, pine flatwoods, and along the edges of marshes and swamps. These environments are typically characterized by sandy or loamy soils that are well-drained but can tolerate periods of inundation. Leavenworth's Tickseed prefers full sun to partial shade. In cultivation, it is well-suited to well-drained soils and benefits from regular watering, especially during dry periods. Its adaptability to various soil types, provided they are not overly compacted, makes it a versatile choice for native plant gardens and naturalistic landscaping. This species plays a role in supporting local wildlife. Its nectar-rich flowers attract pollinators such as bees and butterflies, contributing to the ecological health of its habitat. While not widely cultivated for specific economic purposes, its ornamental value is significant. Leavenworth's Tickseed is appreciated for its drought tolerance once established and its ability to naturalize in suitable conditions, making it a low-maintenance option for gardeners seeking to incorporate native flora. Its bright yellow flowers provide a striking visual appeal, enhancing the aesthetic qualities of gardens and natural areas. An interesting characteristic of Coreopsis leavenworthii is its resilience and ability to thrive in the often challenging conditions of Florida's native landscapes, such as sandy soils and fluctuating moisture levels. The plant's ability to bloom for an extended period is a valuable trait for both ecological and horticultural purposes, providing a continuous food source for pollinators and a sustained display of color in the landscape. Its specific adaptations to its native wetland and prairie environments highlight its importance in these ecosystems.