Water consistently to maintain evenly moist soil, especially during active growth. Avoid waterlogged conditions, which can lead to root rot. Reduce watering in cooler months when growth slows.

Check the soil moisture regularly and water when the top 2-3 cm feels dry to the touch.

Deadhead spent flowers to encourage further blooming and maintain a tidy appearance. In late fall or early spring, cut back the dead foliage to about 5-10 cm above the ground.

This promotes vigorous new growth and prevents the spread of diseases.

Physostegia digitalis can be propagated by division of clumps in early spring. Carefully separate the established roots and replant divisions promptly.

It can also be propagated from seed sown in fall or early spring, though division is generally more reliable for maintaining desired characteristics.

Repot young plants annually or biennially in spring before new growth begins. Established plants generally do not require frequent repotting but may benefit from division every 2-3 years to maintain vigor.

Use a well-draining potting mix and a pot only slightly larger than the root ball.