Cosmos sulphureus

(Sulphur Cosmos)


Cosmos sulphureus, Reimer’s Ranch Park, Travis Co. 5739


Cosmos sulphureus, Reimer’s Ranch Park, Travis Co. 5735

Scientific Name Cosmos sulphureus USDA PLANTS Symbol COSU5
Common Name Sulphur Cosmos ITIS Taxonomic Serial No. 37165
Family Asteraceae (Sunflower) SEINet
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Description Habitat Disturbed sites. Widespread introduced species native to Mexico.
Plant: Erect annual 1 to over 6 feet tall, smooth to somewhat hairy stems.
Leaves: Opposite, divided into two or three lobes, 2 to almost 5 inches long overall on petioles 3/8 to 2-3/4 inches long.
Inflorescence: Usually solitary bright orange or yellowish-red composite blossoms, 1-3/8 to 2-1/8 inches across atop peduncles 4 to 8 inches long; about 8 ray florets; yellow disk florets.
Bloom Period: Summer to fall.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston and Flora of North America.
BONAP Distribution Map

Map Color Key
Texas Status:

Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County

© Tom Lebsack 2024