[2] Iva hayesiana is a shrubby perennial herb approaching one meter (40 inches) in height.

Its green oval-shaped leaves are fleshy, glandular, aromatic, and 3 to 6 centimeters (1.2-2.4 inches) long.

This is a plant of mineral-rich waterways such as intermittent streams and alkali flats.

[3] Threats to the plant include development of coastal habitat and waterways.

This species is recommended for use as an ornamental plant in fire-resistant landscaping in Southern California.