Celandine Species, Greater Celandine, Killwort, Nipplewort, Swallowwort, Tetterwort
Chelidoniummajus

Family: Papaveraceae (pa-pav-er-AY-see-ee)
Genus: Chelidonium (kel-ee-DON-ee-um)
Species: majus (MAY-jus)

Synonym:Chelidonium laciniatum

Synonym:Chelidonium majus var. laciniatum

Category

Biennials
Perennials

Water Requirements

Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings

Sun Exposure

Full Sun
Sun to Partial Shade
Light Shade
Partial to Full Shade

Foliage

Herbaceous
Smooth

Foliage Color

Blue-Green

Height

18-24 in. (45-60 cm)

Spacing

9-12 in. (22-30 cm)

Hardiness

USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)

Where to Grow

Unknown

Danger

Parts of plant are poisonous if ingested

Bloom Color

Bright Yellow

Bloom Characteristics

Unknown

Bloom Size

Unknown

Bloom Time

Late Spring/Early Summer
Mid Summer

Other details

Unknown

Soil pH requirements

Unknown

Patent Information

Non-patented

Propagation Methods

From seed; direct sow outdoors in fall
From seed; direct sow after last frost
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Seed Collecting

Allow pods to dry on plant; break open to collect seeds
Allow seedheads to dry on plants; remove and collect seeds