PlantFiles is getting a new look! Just in time for spring, we're rolling out a new look for the best online plants database. It will also work with your smart phones and mobile devices, so now you can take it with you on garden center visits or botanical garden tours. Questions or comments? Please post them here.

Waterton Mock Orange
Philadelphus lewisii 'Waterton'

View gallery
Family: Hydrangeaceae (hy-drain-jee-AY-see-ee) (Info)
Genus: Philadelphus (fil-uh-DEL-fuss) (Info)
Species: lewisii (lew-ISS-ee-eye) (Info)
Cultivar: Waterton
Hybridized by Alberta Horticultural Research Station, Brooks, Alberta, Canada

Category:

Shrubs

Height:

4-6 ft. (1.2-1.8 m)

Spacing:

4-6 ft. (1.2-1.8 m)

Hardiness:

USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

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)

Sun Exposure:

Full Sun

Sun to Partial Shade

Light Shade

Danger:

Unknown - Tell us

Bloom Color:

White/Near White

Bloom Time:

Mid Summer

Foliage:

Deciduous

Other details:

This plant is attractive to bees, butterflies and/or birds

Flowers are fragrant

Drought-tolerant; suitable for xeriscaping

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 hardwood cuttings

Seed Collecting:

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

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Oct 10, 2012, manxy from Edmonton
Canada wrote:

This plant was discovered by Augustus Griffin in 1933 growing in what is now the Waterton National Park of Canada. On the east side of the Rocky Mountains. So is a selection from the native plants in the area.