Water regularly during the first growing season to establish a deep root system. Once established, Congdon's woolly sunflower is drought-tolerant.

Water only when the soil is dry to the touch, typically every 2-4 weeks during dry periods. Avoid overwatering, which can lead to root rot.

Pruning after flowering can help maintain a tidy appearance and encourage a second bloom. Deadhead spent flowers regularly to promote more blooms throughout the season.

In late fall or early spring, prune back any dead or overgrown stems to the ground to encourage fresh growth.

Congdon's woolly sunflower can be propagated by seed sown in early spring or by division of established clumps in early spring or fall. Seeds may require a period of cold stratification.

Cuttings can also be taken in late spring or early summer and rooted in moist, well-draining soil.

Repotting is typically not necessary for this perennial wildflower as it thrives in well-draining soil. If grown in a container, repot every 2-3 years in early spring before new growth begins.

Use a well-draining potting mix and a pot with drainage holes to prevent waterlogging.