Minnesota Wildflowers


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Liatris aspera (Rough Blazing Star)

Plant Info
Also known as: Tall Blazing Star, Gayfeather
Genus:Liatris
Family:Asteraceae (Aster)
Life cycle:perennial
Origin:native
Habitat:part shade, sun; dry prairies, open woods, along roads
Bloom season:July - September
Plant height:1 to 4 feet
USDA PLANTS database:Minnesota county distribution map
Spotted in Ramsey County at:

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Detailed Information

Flower: 5-petals round spike

[photo of flowers] Flowers are in a spike cluster 6 to 18 inches long of purple to pinkish flower heads. Each flower head is about 1 inch across and made up of 25 to 40 star-shaped disk flowers with a long stringy style emerging from the center. The flower heads may be stalked but tend to be stalkless. Flowers bloom from the top of the plant down.

[photo of bracts] The bracts are rounded; the edges fold inward and have jagged edges. The bract color is green or tinged with purple.

Leaves and stem: alternate simple

[photo of leaves] Leaves are narrow and blade-like with a prominent central vein and pointed tip, becoming progressively smaller as they ascend the stem. Leaves at the base of the plant are up to 12 inches long, less grass-like in shape and have long leaf stems; those farther up the plant have no leaf stem and average about 3 inches long. Leaves have a rough texture from short stiff hairs. Attachment is alternate, but are crowded on the stem so may appear to be whorled. The main stem is ridged and is also rough from short stiff hairs, but may become smooth with age. Stem color is green or dark red.

Notes:

There are multiple species of Blazing Star native to Minnesota and the easiest way to tell them apart is by the bracts. Rough Blazing Star has round bracts with fringed edges that curl or fold in.

Blazing Star has a special nectar that Monarch Butterflies must feed on before migrating to Mexico for the winter. Without this nectar, they may not survive the trip.

Where to buy native seed and plants

Help support this site by buying seeds & plants from these vendors. Tell them we sent you!

  • Prairie Restorations - Bringing people together with the land
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  • Out Back Nursery and Landscaping - Where Ecology and Horticulture Unite
  • Shooting Star Native Seeds - Native Prairie Grass and Wildflower Seeds

Map of native plant purveyors in the upper midwest

More photos

Photos taken at Long Lake Regional Park, New Brighton, MN and Wild River State Park, Center City, MN July-September 2007

Comments

Have you seen this plant in Minnesota, or have any other comments about it?

Posted by: Marc in Rollag/Hawley (Clay Co.)
on: 2009-08-15 21:21:25

Many specimens blooming on wide-expanse prairie land at this time. (Mid August)

Posted by: Lisa in Nevis (north central)
on: 2009-08-20 13:54:58

I found this flower blooming in the last couple of days along the Heartland Trail. It's really gorgeous, especially up close! I've never noticed it before. There are lots of flowers which look similar from a distance, so I assumed it was one of those.

Posted by: Sara in Traverse County
on: 2011-01-06 09:21:23

I've noticed a nice patch of these blooming in a road ditch just a few miles from Wheaton.

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