Propagate by seed, cuttings, division or separation - Divide every 2 to 3 years in early spring to promote cold hardiness and maintain plant vigor. Undivided plants are not long-lived.

Sow seeds indoors in late winter, or outdoors in seedbed in midspring. Move to garden when frost danger has passed.

Make cuttings in spring.

Plants are short-lived, but don't flower themselves to death as fast as large-flowered tickseed (C. grandiflora). To maintain hardiness and vigor, divide every 2 to 3 years.

Deadhead daily to prolong blooming. Cut plants back in midsummer if their growth becomes straggly. This prevents excessive flowering, which can kill the plant.

Cut plants back nearly to the ground in late summer or early fall to encourage healthy new foliar growth. Allow foliage to remain for the winter, then clean up the plants in the spring.

More growing information: How to Grow Perennials

Slugs and snails
Aphids
Flea beetles
Striped and/or spotted cucumber beetles
Potato aphid

Powdery mildew
Botrytis blight
Bacterial and fungal leaf spots
Root and/or crown rots
Downy mildew
Aster yellows

Some varieties are hybrids with large-flowered tickseed (C. grandiflora).

'Baby Gold' grows 1.5 feet tall with single golden yellow blooms.

'Baby Sun' grows 1.5 feet tall with golden yellow blooms.

'Brown Eyes' grows 2 feet tall with golden blooms marked with maroon-brown centers.

'Double Sunburst' grows 1.5 feet tall with semi-double golden yellow blooms with prominent centers.

'Goldfink' is a compact dwarf that grows just 10 inches tall with single golden yellow blooms.

'Goldteppich' grows 1 to 1.5 feet tall with golden yellow flowers.

'Sterntaler' grows 1.5 feet tall with double golden blooms marked with a showy brown centers.

'Sunburst' grows 2 to 2.5 feet tall with double golden yellow blooms.