Yellow Root
Xanthorhizasimplicissima

Family: Ranunculaceae (ra-nun-kew-LAY-see-ee)
Genus: Xanthorhiza (zan-tho-RISE-uh)
Species: simplicissima (sim-plih-KISS-ee-muh)

Category
Groundcovers
Herbs
Shrubs

Water Requirements
Average Water Needs; Water regularly; do not overwater

Sun Exposure
Partial to Full Shade

Foliage
Grown for foliage
Deciduous

Foliage Color

Height
18-24 in. (45-60 cm)

Spacing
18-24 in. (45-60 cm)

Hardiness
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)

Where to Grow

Danger
All parts of plant are poisonous if ingested

Bloom Color
Maroon/Burgundy

Bloom Characteristics

Bloom Size

Bloom Time
Mid Spring
Late Spring/Early Summer

Other details

Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information
Non-patented

Propagation Methods
By dividing the rootball
From semi-hardwood cuttings
From seed; winter sow in vented containers, coldframe or unheated greenhouse

Seed Collecting