Texas Primrose
Calylophus ‘drummondianus’
Characteristics
- Bloom Description: Yellow
- Sun: Full Sun – Light shade
- Water: Low, once established
- Maintenance: Low
- Attracts: Bees, Butterflies, Hummingbirds
- Texas Native
Culture
Easily grown in average, dry to medium moisture, well-drained soils in full sun, Texas Primrose tolerates some afternoon part-shade and drought. Also tolerates poor soils. Soils should have good drainage. The showy, yellow flowers are 2 inches across with four, broad, crinkled petals. This is a bushy plant that sometimes becomes woody near the base. Texas Primrose leaves are narrow and spiny-toothed. Minimal fertilization is needed. Use a balanced, low-nitrogen fertilizer sparingly in the spring if desired. Mulch around the base to retain soil moisture and suppress weeds but avoid direct contact with the crown.
Noteworthy Characteristics
This low-growing, spreading plant has delicate, narrow, green to grayish-green leaves. Texas Primrose produces bright yellow, cup-shaped flowers that fade to orange or red as they age. It is valued for its drought tolerance, vibrant yellow flowers, and ability to thrive in tough conditions, making it a favorite for xeriscaping and pollinator gardens. Flowers open in the evening and remain open into the next day, attracting pollinators like bees and butterflies. Prefers well-drained, sandy, or rocky soil. Tolerates poor, nutrient-deficient soils but dislikes waterlogged conditions. Extremely drought-tolerant once established. Water deeply but infrequently, allowing the soil to dry out between watering.
Named for French-Swiss physician Jean Louis Berlandier (1805-1851) who collected plants in Texas and northern Mexico.
Problems
No serious insect or disease problems.
Garden Uses
Texas Primrose is excellent for covering large areas in sunny, dry gardens. Ideal for slopes or rocky areas where soil erosion is a concern. Perfect for water-efficient landscapes. Can be grown in containers with well-draining soil.