Trichostema austromontanum is a species of flowering plant in the mint family known by the common name San Jacinto bluecurls.

[1] It is native to California from the mountains east of the Sierra Nevada to the Transverse Ranges and Peninsular Ranges, its distribution extending south into Baja California.

It is an annual herb approaching half a meter in maximum height, its aromatic herbage coated in glandular and nonglandular hairs.

The inflorescence is a series of clusters of flowers located at each leaf pair.

Each flower has a hairy calyx of pointed sepals and a tubular, lipped purple corolla.