One of the best-known species of the genus, H. gardnerianum has foot tall inflorescences of bright canary yellow flowers with firey red stamens. The flowers have a light fragrance. The season's new stems emerge late, often in June. Full sun in rich soil with abundant moisture during the growing season. Mulch with fallen leaves in winter. In colder regions grow in a pot or store in dry peat moss and keep above zero.
Sunny or shady forest edges. Shaded woodland and steep banks along roadsides growing along with grasses and low bush.