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Creeping Thistle

Cirsium arvense · Sunflowers, Daisies, Asters, and Allies

Creeping Thistle (Cirsium arvense)
(c) Adja Gaye, some rights reserved (CC BY-NC), uploaded by Adja Gaye · CC BY-NC · via iNaturalist

Creeping Thistle (Cirsium arvense) is in the Sunflowers, Daisies, Asters, and Allies family (Asteraceae). Across the U.S., iNaturalist users have logged 3,138 research-grade flowering observations of it in our sample, peaking in July.

Nationally it blooms mainly from June to September, but timing varies a lot by state and elevation — see the table below.

When to photograph Creeping Thistle: observations by month (U.S.)

JanFebMarAprMayJunJulAugSepOctNovDec

About Creeping Thistle

Cirsium arvense is a perennial species of flowering plant in the family Asteraceae, native throughout Europe and northern Asia, and widely introduced elsewhere. The standard English name in its native area is creeping thistle.From Wikipedia via iNaturalist — article, CC BY-SA.

Creeping Thistle by state

StateObservationsPeak monthMain season
Ohio545JuneJun–Sep
Washington354JulyJun–Aug
New York288JulyJun–Jul
Pennsylvania264JuneJun–Jul
Oregon204JulyJun–Aug
Minnesota201JulyJun–Jul
Colorado139JulyJun–Oct
Maryland120JuneJun–Aug
Michigan120JulyJun–Sep
Illinois106JuneJun–Jul
Vermont101JulyJul–Jul
Wisconsin97JulyJun–Jul
New Jersey90JuneJun–Aug
Indiana70JulyJun–Sep
Massachusetts58JulyJun–Jul
Maine54JulyJul–Sep
Utah41SeptemberJun–Sep
North Dakota33JulyJul–Sep
Wyoming31AugustJul–Aug
Iowa28JuneJun–Jul
Virginia27JuneJun–Jul
Idaho19AugustJun–Aug
Connecticut16JulyJun–Sep
Montana16AugustJul–Oct
West Virginia15JuneJun–Aug
Kentucky14JulyJun–Sep
South Dakota14JulyJul–Sep
Alaska13AugustJul–Aug
New Hampshire12AugustJul–Aug
Delaware10JulyJun–Aug
District of Columbia9MayMay–Aug
North Carolina8AugustAug–Sep
Nebraska7JulyJun–Sep
Nevada5JulyJul–Jul
New Mexico5JulyJul–Aug

Main season = months with at least 30% of the state's peak-month count.

Related wildflowers (Sunflowers, Daisies, Asters, and Allies)

Photography tips

  • Photograph flowers on calm, overcast mornings to avoid wind blur and harsh shadows.
  • Get low: a shallow depth of field (f/2.8–f/5.6) isolates a bloom against soft color.
  • Stay on trails — trampling meadows kills plants and ruins next year's display.
  • Try a kaleidoscope abstract of a single bloom with our online kaleidoscope tool.

FAQ

When is the best time to photograph Creeping Thistle?
Nationally, July has the most observations, with the main season from June to September.
Where is Creeping Thistle most often seen?
The most observations come from Ohio, Washington, New York.