Cosmos sulphureus

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Scientific Name Cosmos sulphureus USDA PLANTS Symbol
Common Name Sulphur Cosmos ITIS Taxonomic Serial No.
Family Asteraceae (Sunflower) SEINet Reference
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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.
Texas Status

© Tom Lebsack 2019