Philadelphus Species, Coulter's Mock Orange, Mock Orange
Philadelphuscoulteri

Synonym:Philadelphus osmanthus

Synonym:Philadelphus pringlei

Synonym:Philadelphus purpusii

Category
Shrubs

Water Requirements

Sun Exposure
Full Sun
Sun to Partial Shade
Light Shade

Foliage
Evergreen
Deciduous

Foliage Color

Height
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)

Spacing
10-12 ft. (3-3.6 m)

Hardiness
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

Danger
Parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction

Bloom Color
Pale Yellow
White/Near White

Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant

Bloom Size

Bloom Time
Mid Spring
Late Spring/Early Summer

Other details

Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information
Non-patented

Propagation Methods
From softwood cuttings
From semi-hardwood cuttings
From hardwood 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
Allow pods to dry on plant; break open to collect seeds