Canada Thistle
Cirsium arvense
Found in pastures, disturbed areas. FloraQuest, phone app (app page) What its natural habitat tells you
-55
Severe harm
Not native to Virginia. How scores work Is it native here?
Profile 82%
- Height
- 1 to 6.5 feet tall
- Light
- Full sun, Partial shade
- Soil moisture
- Dry to moist
Do not plant. Listed invasive in Virginia.
At a glance
- Life cycle
- Perennial
- Bloom
- July to November
JFMAMJJASOND
Not yet recorded · Spread · Leaves
Recorded in 44 Virginia counties.
Habitats
Roadsides, fields and disturbed ground.
Each habitat page lists the plants and wildlife also found there. All habitats
Ecological relationships
Who uses this plant?
34CaterpillarsGenus host records with ranges including VA
Genus host records with ranges including VA · Cirsium
- Achyra rantalisGarden Webworm Moth
- Anagrapha falciferaCelery Looper Moth
- Autographa precationisCommon Looper Moth
- Calephelis virginiensisNorthern Metalmark
- Cenopis reticulatanaReticulated Fruitworm Moth
- Choristoneura rosaceanaOblique-Banded Leafroller Moth, Rosaceous Leaf Roller
- Dicymolomia julianalisJulia's Dicymolomia
- Epiblema scudderianaScudder's Epiblema, Goldenrod Gall Moth
- Homoeosoma electellaSunflower Moth
- Lipocosmodes fuliginosalisSooty Lipocosmodes
Show all 34
- Megalographa bilobaBilobed Looper Moth
- Orthodes cynicaCynical Quaker, Cynical Groundcat
- Papaipema arctivorensNorthern Burdock Borer Moth
- Papaipema cataphractaBurdock Border, Potato-Stalk Borer
- Papaipema cerussataIronweed Borer Moth
- Papaipema insulidensRagwort Stem Borer
- Papaipema nebrisStalk Borer
- Papilio glaucusEastern Tiger Swallowtail
- Paralobesia viteanaAmerican Vine Moth, Grape Berry Moth
- Phlogophora irisOlive Angle Shades
- Phyciodes tharosPearl Crescent, Crescentspot
- Phycitodes reliquellaWhite-Edged Phycitodes
- Platyptilia carduidactylusArtichoke Plume Moth
- Pyrausta subsequalisMottled Pyrausta
- Synchlora frondariaSouthern Emerald
- Udea rubigalisCelery Leaftier
- Vanessa carduiPainted Lady, Cosmopolite
- Vanessa virginiensisAmerican Lady, American Painted Lady
- Walshia miscecolorellaSweetclover Root Borer Moth
- Xestia c-nigrumSpotted Cut-Worm, Setaceous Hebrew Character, Lesser Black-letter Dart
- Xestia dolosaGreater Black-Letter Dart, Greater Spotted Cutworm
- Hedya cyanana
- Homoeosoma pedionnastes
- Pseudotelphusa carduiella
—BeesSoutheastern regional records
12Specialist beesPollen specialists
Pollen specialists · Cirsium
- Andrena nubecula
- Andrena placata
- Andrena runcinatae
- Andrena simplex
- Diadasia enavata
- Megachile pugnata
- Melissodes confusus
- Melissodes desponsus
- Melissodes illatus
- Melissodes rivalis
Show all 12
- Osmia chalybea
- Osmia texana
6BirdsRecorded genus food-resource interactions; not a state feeding claim
Recorded genus food-resource interactions; not a state feeding claim · Cirsium
- Callipepla californicaCalifornia Quail
- Columbina passerinaCommon Ground Dove
- Meleagris gallopavoWild Turkey
- Perdix perdixGray Partridge
- Spizella pusillaField Sparrow
- Zenaida macrouraMourning Dove
Direct food only: birds recorded eating this genus across North America. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening
Growing and identification
Plant details
- Family
- Asteraceae
- Hardiness
- Zones 4a–7b
- Soil pH
- Neutral to alkaline
- Flower color
- Pink, purple or white
Safety has not been reviewed for this plant; check toxicity and thorns before planting.
Growing sources and scope
- Bloom · “July to November” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) · Carolinas and Georgia
- Flower color · “Pink, purple or white” · NC Extension Plant Toolbox
- Hardiness · “Zones 4a–7b” · NC Extension Plant Toolbox
- Height · “1 to 6.5 feet (0.3-2 m) tall” · Fire Effects Information System: Cirsium arvense (ranked first; Minnesota Wildflowers differs) · Source botanical description; original units and scope retained
- Life cycle · “Perennial” · NC Extension Plant Toolbox
- Light · “Full sun (6 or more hours of direct sunlight a day); Partial shade (direct sunlight only part of the day, 2-6 hours)” · NC Extension Plant Toolbox
- Soil · “Moist; Occasionally dry; Occasionally wet; Very dry” · NC Extension Plant Toolbox
- Soil pH · “Neutral to alkaline” · NC Extension Plant Toolbox
Also known as
Carduus arvensis; Field Thistle; plumeless thistle; plumeless-thistle
Conservation status
| Virginia rank | SNA |
|---|---|
| Global rank | GNR |
| VA status | Not verified |
| Federal status | Not verified |
Native alternatives
Find natives for your gardenSources
- Virginia DCR invasive plant list
- Digital Atlas of the Virginia Flora
- USDA PLANTS
- FloraQuest: Carolinas, Georgia (Weakley), phone app (app page)
- FloraQuest: Northern Tier (Weakley), phone app (app page)
- NatureServe Explorer
- Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
- Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
- Smith, Bachelder, Russell, Morales, Mosher & Seltmann 2024, Bee-Specialization-Modeling v0.6.1 (specialist host table compiled from J. Fowler's pollen specialist bee lists), Zenodo, CC BY 4.0
- Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)
- Narango, Tallamy & Shropshire 2020, Few keystone plant genera support the majority of Lepidoptera species, Nature Communications