Primula Species, Asiatic Primrose, Cherry Blossom Primrose, Japanese Primrose, Siebold's Primrose
Primulasieboldii

Family: Primulaceae Genus: Primula (PRIM-yew-luh)
Species: sieboldii (see-BOLD-ee-eye)

Synonym:Auganthus sieboldii

Synonym:Primula cortusoides var. sieboldii

Synonym:Primula sieboldii var. patens

Category

Perennials

Water Requirements

Average Water Needs; Water regularly; do not overwater

Sun Exposure

Sun to Partial Shade
Light Shade

Foliage

Herbaceous

Foliage Color

Unknown

Height

6-12 in. (15-30 cm)

Spacing

12-15 in. (30-38 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

Grow outdoors year-round in hardiness zone
Can be grown as an annual

Danger

Unknown

Bloom Color

Pale Pink
Pink
Rose/Mauve
Magenta (pink-purple)
White/Near White

Bloom Characteristics

Unknown

Bloom Size

Unknown

Bloom Time

Late Spring/Early Summer

Other details

Unknown

Soil pH requirements

5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information

Non-patented

Propagation Methods

By dividing the rootball
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

Allow seedheads to dry on plants; remove and collect seeds