Texas blueweed
Helianthus ciliaris DC.


Helianthus ciliaris is a perennial herbaceous plant that can grow from 1.3-2.3 ft. (40-70 cm) tall. The stems are blue-green to gray-green in color and can be upright to recumbent. H. ciliaris is native to Arizona, Kansas, New Mexico, Oklahoma, Texas, Utah and Mexico.
The mostly opposite leaves are cauline, sessile and veined. They are linear to lanceolate and from 1.2-3.0 x 0.2-0.9 in. (3-7.5 x 0.5-2.2 cm) long by wide.
The flowers are composites. The ray flowers are yellow while the disk flowers are reddish to purple-brown in color.
The fruits are glabrous cypselae containing a single seed. Seeds are smooth and hairless, 0.12-0.14 in. (3-3.5 mm) long. H. ciliaris also readily reproduces vegetatively by rhizomes.
Ecological Threat
H. ciliaris grows along roadsides, ditches, cultivated fields and open drainage areas. It can spread aggressively, especially in cultivated fields. The creeping rhizomes of H. ciliaris allow it to form extensive colonies.


EDDMapS Distribution

EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

State Regulated List

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteridae
Order: Asterales
Family: Asteraceae
Genus: Helianthus
Subject: Helianthus ciliaris DC.

Synonyms and Other Names

Other Common Names:
blueweed, blueweed sunflower, Texas-blueweed, yerba parda


Plants - Forbs/Herbs