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Caulophyllum thalictroides

Blue Cohosh, Squaw-root, Pappoose-root

Names

Scientific name
Caulophyllum thalictroides
Common name
Blue Cohosh, Squaw-root, Pappoose-root

Measurements

Height
1 - 4 ft
Spread
6 - 24 in
Spacing
18 in
Growth Rate
Moderate

Requirements

Hardiness zones
3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b
Sunlight
Partial Shade, Full Shade
Soil Drainage
Moist but Well-drained
Soil type
Loam
Soil pH
Strongly acidic (5.1 - 5.5), Moderately acidic (5.6 - 6.0), Slightly acidic (6.1 - 6.5)

Physical Traits

Lifecycle
Perennial
Leaf lifecycle
Deciduous
Foliage color
Medium Green, Blue-Green
Fall foliage
BrownYellow
Bloom time
Early Spring, Spring
Bloom color
Yellow-Green, Greenish Yellow
Seasons of interest
Spring, Summer
Propagation methods
Seeds, Division
Attracts
Bees, Butterflies

Toxicity

Toxic to humans
Yes
Toxic to dogs
Yes
Toxic to cats
Yes

Taxonomy

Taxonomic Rank
Species
Author
(L.) Michx.
Publication
Fl. Bor.-Amer. 1: 205 (1803)

Superior Taxa

Kingdom
Plantae
Subkingdom
Pteridobiotina
Phylum
Angiosperms
Order
Ranunculales
Family
Berberidaceae
Genus
Caulophyllum

Synonyms

Leontice thalictrifolium Leontice thalictroides Caulophyllum thalictroides var. thalictroides

References

Caulophyllum thalictroides (Blue cohosh) | Native Plants of North America, Lady Bird Johnson Wildflower Center, https://www.wildflower.org/plants/result.php?id_plant=cath2, accessed November 9, 2024

Caulophyllum thalictroides - Plant Finder, Missouri Botanical Garden, https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=277766, accessed November 9, 2024

Caulophyllum thalictroides - an overview, Science Direct, https://www.sciencedirect.com/topics/medicine-and-dentistry/caulophyllum-thalictroides, accessed November 9, 2024

Caulophyllum thalictroides (Blue Cohosh) | North Carolina Extension Gardener Plant Toolbox, NC State Extension, https://plants.ces.ncsu.edu/plants/caulophyllum-thalictroides/, accessed November 9, 2024

Caulophyllum thalictroides (blue cohosh): Go Botany, Native Plant Trust, https://gobotany.nativeplanttrust.org/species/caulophyllum/thalictroides/, accessed November 9, 2024

Caulophyllum thalictroides (Blue Cohosh): Minnesota Wildflowers, Minnesota Wildflowers, https://www.minnesotawildflowers.info/flower/blue-cohosh, accessed November 9, 2024

World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024

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