One of the most intense flowering perennials among the California flora is the Sulphur buckwheat. This species is a low mounding perennial, 6-18 in. high, spreading 1-3 ft. across with pale green oval-shaped leaves. Brilliant sulphur-yellow ﬂowers occur from spring into summer. This variable species is native to cooler climate zones in many western states, and is a successful flowering perennial for 3-4 years in Inland Empire gardens.
Plant the sulphur buckwheat on well drained soils in full sun and sustain with low amounts of summer irrigation. This plant grows well in combination with other drought tolerant native shrubs and perennials on banks, around rocks, as a border plant and to attract butterflies.