Eric Hunt / CC BY-SA 4.0
garden
Bloodroot
Sanguinaria canadensis
MedicinalToxic — Use CautionDrought TolerantNative to N. America
Overview
One of the first spring wildflowers to emerge in eastern North American woodlands, bloodroot opens its pristine white petals for just a day or two before scattering. Named for the bright red-orange sap in its rhizomes, this plant was used extensively by Native Americans as a dye and ceremonial pigment. It is toxic if ingested but has a fascinating history in herbal medicine under professional guidance.
Growing Conditions
LightFull Sun
MoistureModerate
Hardiness Zones3 — 6
Height0.2m
Spread0.3m
Growth HabitTree
LifespanPerennial
Bloom ColorWhite
Pollinator Valuemoderate
Companion Planting & Soil
Good Companions
Soil pH5 — 6.5
Soil TypeRich, moist, humusy woodland soil with leaf litter
Planting Calendar
When to sow, transplant, and harvest by growing zone.
| Zone | Action | Months | Notes |
|---|---|---|---|
| Cold (1-2) | Transplant | Sep — Oct | Plant rhizomes 1" deep in fall; toxic orange sap — handle with gloves |
| Cold (1-2) | Bloom | Apr — May | Brilliant white flowers last only 1-2 days; each leaf wraps a single flower bud |
| Cool (3-4) | Transplant | Sep — Oct | Fall planting; rich, moist woodland soil; spreads slowly by rhizome |
| Cool (3-4) | Bloom | Mar — May | Very early spring bloom; native bee magnet; ant-dispersed seeds |
| Moderate (5-7) | Transplant | Oct — Nov | Fall plant in shade; ephemeral — foliage gone by midsummer |
| Moderate (5-7) | Bloom | Mar — Apr | Fleeting spring bloom; pairs beautifully with hepatica |
Uses
Medicinal
- Sanguinarine compound used in some dental products for plaque control
- Historical topical use for skin growths (under professional guidance only)
- Traditional Native American remedy for respiratory conditions
Other Uses
- Beautiful native woodland garden specimen
- Natural red-orange dye from rhizome sap
- Important early-spring pollinator resource
Safety Notes
This species contains many alkaloids and is poisonous in large doses[4, 21, 46, 165]. This herb should not be used by women when they are pregnant or lactating[165]. The sap, fresh or dried, can cause intense irritation to the mucous membranes[169].
