Water sparingly once the soil has completely dried out. This plant prefers dry conditions and is susceptible to root rot if overwatered. Ensure excellent drainage in its pot and the soil mix.

Pruning is generally not required for Phacelia inconspicua. If any dead or damaged foliage appears, it can be removed to maintain the plant's appearance. This species typically maintains a compact form naturally.

Propagate by seed. Sow seeds in well-draining soil mix in spring. Keep the soil lightly moist and provide warmth. Germination can be slow and erratic. Avoid transplanting seedlings if possible, as they are sensitive.

Repot only when absolutely necessary, typically when the plant becomes root-bound. Use a well-draining potting mix.

Since this species dislikes root disturbance, choose a pot size that will accommodate growth for at least a year or two.