Water moderately during the growing season, allowing the soil to dry slightly between waterings. Reduce watering significantly in fall and winter to prevent root rot.

Ensure good drainage to avoid waterlogged conditions, as this species is drought-tolerant once established.

Deadheading spent flowers regularly encourages more blooms and prolongs the flowering season. At the end of the growing season, or if plants become untidy, cut back the foliage by about one-third to maintain a compact shape and prepare for dormancy.

Propagate from seed sown in early spring or directly in the garden after the last frost. Seeds germinate best with light stratification.

Can also be propagated by division of established clumps in early spring, though they may not transplant as readily.

Eschscholzia caespitosa generally prefers not to be disturbed once established and can naturalize. If grown in containers, repotting is rarely necessary, but if it becomes root-bound, repot in spring to a slightly larger container with well-draining soil.