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Common Blue Cohosh

Caulophyllum thalictroides

In the Carolinas and Georgia, found in rich forests. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you

22
Good

Native to Arkansas. How scores work Is it native here?

Profile 94%

Height
1–2 feet
Spread
6 inches–1 foot
Light
Dappled sunlight, Deep shade, Partial shade
Soil moisture
Usually moist

Space about 1 ft apart from its recorded spread, about 100 per 100 sq ft. Enter your bed size for a count

Will it fit your yard?

Rare or protected plant. Specialist conservation planting; excluded from routine garden suggestions. Plant caution source

Hidden from default planting suggestions. Wildlife value and native status remain unchanged.

At a glance

Life cycle
Perennial
Leaves
Deciduous
Bloom
April to May
Fruiting season
July to August

Recorded in 6 Arkansas counties.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

Moist forests

Forests on moist but not wet ground, such as rich slopes and ravines.

All habitats

Also found with this plant

Wildlife whose habitat models include habitats this plant grows in, in Arkansas. Shared habitat, not food. 78 animals.

All wildlife of Arkansas

Ecological relationships

Who uses this plant?

What these records mean

2CaterpillarsGenus host records with ranges including AR

Genus host records with ranges including AR · Caulophyllum

  • Clepsis melaleucanusBlack-Patched Clepsis, Trillium Tortrix
  • Crocigrapha normaniNorman's Quaker
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
0BeesSoutheastern regional records
0Specialist beesPollen specialists
—BirdsRecorded genus food-resource interactions; not a state feeding claim
Beetles 2
  • Idiostethus subcalvus
  • Mordellistena biplagiata

Flower visits · Carlinville, Illinois, USA

Flies 7
  • Chilosia petulca
  • Chlorops assimilis
  • Dynatosoma thoracicum
  • Morellia micans
  • Mydaea socialis
  • Rhamphomyia piligeronis
  • Rhingia nasica

Flower visits · Carlinville, Illinois, USA

Other wasps 3
  • Bracon trifolii
  • Bracon vernoniae
  • Dacnusa flavicincta

Flower visits · Carlinville, Illinois, USA

No records yet · Ants · Adult butterflies / moths · Other insects

Growing and identification

Plant details

Family
Berberidaceae
Hardiness
Zones 3a–8b
Soil pH
Acidic to alkaline
Flower color
Yellow or green
Growth rate
Moderate
Growth habit
Several stems
Foliage color
Green
Fruit begins
July
Fruit ends
August
Growing sources and scope
Also known as

Blue Cohosh

Conservation status

Arkansas rankS2
Global rankG4G5 [G5]
AR statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

Will it fit your yard?

Check this plant against your county, sun and soil moisture. Conditions are checked in your browser.

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How to check your spot

Growing cautions

For planning only; these do not change the score or Fit.

Sources