Monardella undulata, commonly known as Curlyleaf Monardella, is an annual subshrub or herb native to the coastal sage scrub and chaparral of California, particularly thriving in open, sunny locations. It typically grows to a height of up to 0.5 meters (1.6 ft) with a spread of 2.5 meters (8.2 ft). This species features an erect, reddish stem and an inflorescence consisting of a head of several purple flowers, each up to 2 centimeters long, surrounded by rough-haired, sometimes purple-tinged bracts up to 3 centimeters wide. The blooming period is in the spring and summer, and the flowers are attractive to pollinators such as butterflies and bees.

Curlyleaf Monardella is valued for its showy purple flowers and its ability to attract wildlife, including the endangered Myrtle’s silverspot butterfly (Speyeria zerene myrtleae), which relies on its nectar. It is suitable for xeriscaping and naturalistic plantings in gardens that mimic its native habitat. The plant prefers full sun exposure, low to medium water requirements, and well-drained soils. It is relatively low-maintenance but may be susceptible to root rot if overwatered or planted in poorly drained soils. Due to its compact size and attractive flowers, it can be used in rock gardens, borders, or as a ground cover.CC BY-SA 4.0