Yellowroot

Xanthorhiza simplicissima

Native to:
United States

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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.

Source: Ontario Rock Garden & Hardy Plant Society