Helleborus, Hellebore, Black Hellebore, Christmas Rose, Lenten Rose
Helleborus 'Ivory Prince'

Synonym:Helleborus x nigersmithii

Category
Perennials

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

Sun Exposure
Sun to Partial Shade

Foliage
Evergreen
Smooth

Foliage Color
Blue-Green

Height
6-12 in. (15-30 cm)
12-18 in. (30-45 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)

Where to Grow

Danger
All parts of plant are poisonous if ingested

Bloom Color
White/Near White

Bloom Characteristics

Bloom Size

Bloom Time
Late Winter/Early Spring
Mid Winter

Other details

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

Patent Information
Patented

Propagation Methods
By dividing the rootball
From herbaceous stem cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors

Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed