Helianthus simulans E.E. Watson
Muck Sunflower, Narrow-leaved Sunflower, Swamp Sunflower
Asteraceae (Aster Family)
USDA Symbol: HESI2
Daisy-like flowers occur on the many branch tips of this 3-8 ft. perennial. The petals are yellow and the centers purplish-red. Leaves are long, narrow, firm and hairy.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Size Notes: Up to about 8 feet tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.
Bloom InformationBloom Color: Red , Yellow
Bloom Time: Aug , Sep , Oct , Nov
DistributionUSA: AR , FL , GA , LA , TX
Native Distribution: PA to extreme s. IN & s. MO, s. to FL & e. TX
Native Habitat: Wet to moist, open or shady places
Growing ConditionsLight Requirement: Part Shade
Soil Description: Moist to fully saturated soils.
Conditions Comments: This species is usually too tall and gangly for use in a regular garden. It works best in muddy soils along ponds where it stays more compact and colonizes densely, making brilliant swaths of gold. One-third of the growth can be removed in early summer to encourage more bushiness and flowers.
Value to Beneficial InsectsSpecial Value to Native Bees
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
PropagationDescription: Excellent germination occurs with seeds that have been refrigerated over winter. Stem cuttings can be taken before flowering, but the easiest method of increase in to divide the clump in early spring.
Seed Collection: Nutlets usually mature 2-3 weeks after flowering. To beat finched to the seeds, secure a small bag around seeds heads after the flowers fade. Air-dry collected seed heads, separate nutlets from chaff, and store in sealed, refrigerated containers.
Commercially Avail: yes
National Wetland Indicator Status
Web ReferenceWebref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Additional resourcesUSDA: Find Helianthus simulans in USDA Plants
FNA: Find Helianthus simulans in the Flora of North America (if available)
Google: Search Google for Helianthus simulans
MetadataRecord Modified: 2022-12-28
Research By: TWC Staff