Canyon Mock-orange

Philadelphusernestii

Family
Hydrangeaceae (hy-drain-jee-AY-see-ee)
Genus
Philadelphus (fil-uh-DEL-fuss)
Synonym
Sun Exposure
Sun to Partial Shade
Light Shade
Foliage
Deciduous
Height
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
Spacing
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 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
N/A
Bloom Color
White/Near White
Bloom Time
Mid Spring
Other Details
Category
Shrubs
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Where to Grow
Bloom Characteristics
Flowers are fragrant
Bloom Size
Other details
Soil pH requirements
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
Seed Collecting
Regional

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

Austin, Texas

New Braunfels, Texas

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Gardener's Notes:

0
positive
1
neutral
0
negative
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Austin, TX (Zone 8b) | November 2010 | neutral

(This comment was assigned a Neutral rating by the author - - I have not grown this plant but do want it in my garden. These notes are...Read More

Canyon Mock Orange habitat is on rocky cliffs and other well-drained sites near wet areas on the Edwards Plateau of Texas. This species can be used in home landscapes as low-growing evergreen and flowering shrubs in shaded and protected locations. Flowers smell like orange blossoms making it an excellent plant near outside living areas.

Nearly identical to the Texas Mock Orange (P. texensis), the only way to tell them apart is to examine their lower leaf surfaces. Lower leaf surfaces of P. ernestii are covered with short straight hairs, while those of P. texensis are matted with a mix of short straight and long tangled hairs.

Deer browse this shrub so it must be protected!

This plant is on display at the Lady Bird Johnson Wildflower Center in Austin, TX.

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