Deinandra kelloggii, commonly known as Kellogg’s spikeweed or Kellogg’s tarweed, is an annual herb native to the chaparral, coastal sage scrub, and grasslands of southern and central California, Baja California, and occasionally found in Pima County, Arizona. It can grow up to 5 feet tall and is characterized by its erect, glandular, and sticky stems. The plant produces numerous flower heads from late spring to early fall, each with 5 bright yellow ray florets and 6 disc florets featuring yellow, red, brown, or maroon anthers, which are quite showy and attract a variety of pollinators.

Kellogg’s spikeweed is appreciated for its vibrant yellow flowers and its ability to thrive in poor, dry soils, making it a suitable choice for wildflower meadows, restoration projects, and drought-tolerant gardens. It requires minimal maintenance once established and is best grown in full sun with well-drained soil. While not commonly used in formal garden settings, it can provide a naturalistic look and support local wildlife. Potential problems include susceptibility to rust and mildew in humid conditions. It is not known for being invasive outside its native range, but gardeners should be mindful of its self-seeding habit.CC BY-SA 4.0