Helianthus hirsutus (Hairy Sunflower)
|Also known as:||Hispid Sunflower, Stiff-haired Sunflower|
|Habitat:||part shade, sun; dry, open woods, thickets, fields|
|Bloom season:||August - October|
|Plant height:||2 to 6 feet|
|Wetland Indicator Status:||none|
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Note: the images on this page are not for Helianthus hirsutus, nor are we confident the descriptive information is correct. We'll update the page just as soon as we get verified images. Sorry for any inconvenience!
Leaves and stem:
Leaves are up to 6 inches long and 2½ inches wide, tapering to a pointed tip. The leaf base is rounded and tapers abruptly to a short “winged” leaf stem. The leaf edges usually have shallow teeth but may be nearly toothless. The upper surface of the leaf is rough and the underside is hairy. Attachment is opposite. The main stem is thick and covered in stiff hairs, though may become smooth with age.
Sunflowers are hard to tell apart. Hairy Sunflower is distinguished from other sunflowers mostly by the stiff hairs on the stem and shallow teeth on the leaf edges. The leaves are typically wider (proportionate to leaf length) than other sunflowers. Hairy Sunflower tends to grow in colonies.
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Photos taken at Long Lake Regional Park, New Brighton, MN September 2006 and 2007
Have you seen this plant in Minnesota, or have any other comments about it?