Blue Cohosh

Planted April 20, 2024

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