Philadelphus Species, Coulter's Mock Orange, Mock Orange

Philadelphuscoulteri

Family
Hydrangeaceae (hy-drain-jee-AY-see-ee)
Genus
Philadelphus (fil-uh-DEL-fuss)
Species
coulteri (kol-TER-ee-eye)
Synonym
Philadelphus osmanthus
Philadelphus pringlei
Philadelphus purpusii
Sun Exposure
Full Sun
Sun to Partial Shade
Light Shade
Foliage
Evergreen
Deciduous
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)
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 Time
Mid Spring
Late Spring/Early Summer
Other Details
Category
Shrubs
Water Requirements
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Bloom Size
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
Regional

This plant is said to grow outdoors in the following regions:

Craig, Colorado

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Gardener's Notes:

0
positive
1
neutral
0
negative
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J
Craig, CO (Zone 4a) | April 2006 | neutral

The shrub does well in Craig, CO. Mine is planted in part sun and clay soil. It flowers greatly but does not have any scent.

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