Yellowroot
Xanthorhiza simplicissima
- Native to:
- United States
Krzysztof Ziarnek, Kenraiz





Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Ranunculaceae
- Genus:
- Xanthorhiza
- Species:
- Xanthorhiza simplicissima
- USDA Symbol:
- XASI
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb , Subshrub
- Height:
- 90 cm
- Light Requirements:
- Shade
- Drought Tolerance:
- Medium
- Bloom Months:
- mar,apr,may
- Bloom Colors:
- purple, brown
- Ground Cover:
- Yes
- Landscaping Shrub:
- Yes
Garden & Ecology Notes
- Deer Resistant:
- Yes
- Fall Color:
- yellow, orange, red
Soil Requirements
- Soil Type:
- rich, moist, well-drained loamy soil
- pH:
- 5.0 - 6.5 (acidic to slightly acidic)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- prefers shaded woodland areas
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 60–90 days
- Germination Time:
- 30–60 days
- Notes:
- Fresh seed germinates best; stored seed requires cold stratification. Germination can be erratic.
The above propagation data sourced from Claude AI
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 60 days.
Source: Claude AI
ORGHPS Germination Guide: Sow @ 4C for 3 weeks, then place @ 20C.