North America Native Plant

Meadow Thistle

Botanical name: Cirsium scariosum

USDA symbol: CISC2

Life cycle: biennial

Habit: forb

Native status: Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Carduus americanus (A. Gray) Rydb. (CAAM19)  âš˜  Carduus coloradensis Rydb. (CACO52)  âš˜  Cirsium acaulescens (Rydb.) K. Schum. (CIAC3)  âš˜  Cirsium acaule All. var. americanum A. Gray (CIACA)  âš˜  Cirsium americanum (A. Gray) K. Schum. (CIAM4)  âš˜  Cirsium butleri (Rydb.) Petr. (CIBU3)  âš˜  Cirsium coloradense (Rydb.) Cockerell (CICO2)  âš˜  Cirsium congdonii J.W. Moore & Frankton (CICO3)  âš˜  Cirsium coloradense (Rydb.) Cockerell ssp. acaulescens (Rydb.) Petr. (CICOA)  âš˜  Cirsium coloradense (Rydb.) Cockerell ssp. longissimum (A. Heller) Petr. (CICOL)  âš˜  Cirsium drummondii Torr. & A. Gray var. acaulescens (Rydb.) J.F. Macbr. (CIDRA)  âš˜  Cirsium drummondii Torr. & A. Gray ssp. lanatum Petr. (CIDRL)  âš˜  Cirsium drummondii Torr. & A. Gray ssp. latisquamum Petr. (CIDRL2)  âš˜  Cirsium drummondii Torr. & A. Gray var. oregonense Petr. (CIDRO)  âš˜  Cirsium drummondii Torr. & A. Gray ssp. vexans Petr. (CIDRV)  âš˜  Cirsium ×erosum (Rydb.) K. Schum. (pro sp.), database artifact (CIER2)  âš˜  Cirsium erosum (Rydb.) K. Schum. (CIER4)  âš˜  Cirsium kelseyi (Rydb.) Petr. (CIKE)  âš˜  Cirsium lacerum (Rydb.) Petr. (CILA4)  âš˜  Cirsium magnificum (A. Nelson) Petr. (CIMA3)  âš˜  Cirsium minganense Vict. (CIMI)  âš˜  Cirsium oreophilum (Rydb.) K. Schum. (CIOR)  âš˜  Cirsium quercetorum (A. Gray) Jeps. var. citrinum Petr. (CIQUC4)  âš˜  Cirsium scariosum Nutt. var. scariosum (CISCS)  âš˜  Cirsium scariosum Nutt. var. thorneae S.L. Welsh (CISCT)  âš˜  Cirsium tioganum (Congd.) Petr. (CITI)  âš˜  Cirsium tioganum (Congd.) Petr. var. coloradense (Rydb.) Dorn (CITIC)  âš˜  Cirsium tioganum (Congd.) Petr. var. tioganum (CITIT)  âš˜  Cnicus drummondii (Torr. & A. Gray) A. Gray var. acaulescens Rydb. (CNDRA)  âš˜  Cnicus tioganus Congd. (CNTI)   

Meadow Thistle: A Native Wildflower Worth Growing If you’re looking to add some wild beauty to your native plant garden, meadow thistle (Cirsium scariosum) might just be the spiky surprise you didn’t know you needed. Don’t let the word thistle scare you away – this native North American wildflower brings ...

Rare plant alert!

Region: Conservation status by state

Status: S5T2T3Q: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Meadow Thistle: A Native Wildflower Worth Growing

If you’re looking to add some wild beauty to your native plant garden, meadow thistle (Cirsium scariosum) might just be the spiky surprise you didn’t know you needed. Don’t let the word thistle scare you away – this native North American wildflower brings more charm than chaos to the right landscape.

What Makes Meadow Thistle Special?

Meadow thistle is a true North American native, calling both Canada and the lower 48 states home. You’ll find this hardy wildflower naturally growing across an impressive range, from Alberta and British Columbia down through the western United States, including Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, and Wyoming. It even pops up in Quebec!

As a biennial to perennial forb, meadow thistle offers the best of both worlds – some plants complete their lifecycle in two years, while others stick around as reliable perennials. This herbaceous plant lacks woody stems, instead producing fresh growth from buds at or below ground level each growing season.

Garden Appeal and Landscape Role

Meadow thistle brings a wild, naturalistic beauty to gardens with its distinctive purple to pink flower heads that bloom from late spring through summer. The deeply lobed, spiny leaves create interesting texture and form, making it a standout addition to:

  • Native plant gardens
  • Prairie and meadow restorations
  • Xeriscape and drought-tolerant landscapes
  • Wildlife and pollinator gardens
  • Naturalized areas where a wild look is desired

Pollinator Powerhouse

Here’s where meadow thistle really shines – those spiky flower heads are absolute magnets for pollinators. Butterflies, native bees, and other beneficial insects flock to the nectar-rich blooms, making this plant a valuable addition to any wildlife-friendly garden. If you’re working to support local ecosystems, meadow thistle delivers both beauty and function.

Growing Conditions and Care

One of meadow thistle’s best qualities is its easy-going nature. This tough native thrives in:

  • Full sun locations
  • Well-draining soils (it’s quite adaptable to different soil types)
  • USDA hardiness zones 3-8
  • Both dry and moderately moist conditions once established

Thanks to its facultative wetland status, meadow thistle can handle both wetland and non-wetland conditions, making it quite versatile for different garden situations.

Planting and Establishment Tips

Getting meadow thistle started in your garden is refreshingly straightforward:

  • Direct seed in fall or early spring for best results
  • Choose a sunny spot with good drainage
  • Once established, this drought-tolerant native needs minimal care
  • Allow plants to self-seed if you want them to naturalize in the area

Important Considerations

Before adding meadow thistle to your garden, there are a few things to keep in mind. This species has a somewhat unclear conservation status, so if you decide to grow it, make sure to source seeds or plants from reputable native plant suppliers who collect responsibly. Never collect from wild populations.

Also, remember that this is a thistle – while not aggressive like some non-native species, it does have spiny leaves and can self-seed. Plant it where its wild nature will be appreciated and where it has room to do its thing without overwhelming more delicate neighbors.

The Bottom Line

Meadow thistle offers native plant enthusiasts a chance to support local wildlife while adding unique texture and reliable blooms to their landscapes. Its adaptability, low maintenance requirements, and pollinator appeal make it a solid choice for the right garden setting. Just remember to source responsibly and give it the space to show off its wild side!

Meadow Thistle

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Cirsium Mill. - thistle

Species

Cirsium scariosum Nutt. - meadow thistle

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA