Water regularly, ensuring the soil remains consistently moist but not waterlogged, especially during the active growing season.

Reduce watering in winter, allowing the top few centimeters of soil to dry out between waterings. Avoid overhead watering to prevent fungal diseases.

Pruning is generally not required for Phacelia capitata. Deadheading spent flower clusters can encourage a longer bloom period and prevent self-seeding if unwanted.

Remove any dead or damaged foliage as needed to maintain a tidy appearance.

Phacelia capitata is easily grown from seed. Sow seeds directly into the garden bed in early spring after the last frost, or start them indoors a few weeks prior. Germination is typically rapid.

Seeds can also be collected from mature plants and sown the following autumn or spring.

As an annual or short-lived perennial that often self-seeds, repotting is rarely necessary.

If grown in containers, it may be beneficial to repot in spring if the plant becomes root-bound, using a well-draining potting mix. However, it's often easier to simply replace plants each year.