It grows mainly in chaparral habitats, frequently in burnt areas[1] or on rocky slopes.

Phacelia cicutaria is an upright annual shrub growing up to 0.6 m (2') high.

Its foliage is deeply lobed, 2–15 cm (1-6") long, with spiked segments.

The flowering stems' resemblance of caterpillars lends this plant its common name.

Its drought tolerance makes it well suited for water conserving gardens.