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Hybrid Lilac, Canadian Lilac 'Mount Baker'

Syringa x hyacinthiflora

Family: Oleaceae (oh-lee-AY-see-ee) (Info)
Genus: Syringa (si-RING-gah) (Info)
Species: x hyacinthiflora (hy-uh-sin-ih-FLOR-uh) (Info)
Cultivar: Mount Baker




Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Flowers are fragrant

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


12-15 ft. (3.6-4.7 m)


10-12 ft. (3-3.6 m)


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



Bloom Color:

Pale Pink

White/Near White

Bloom Time:

Late Spring/Early Summer



Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:


Propagation Methods:

By dividing the rootball

From seed; stratify if sowing indoors

Seed Collecting:

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


This plant has been said to grow in the following regions:

Reubens, Idaho

Norristown, Pennsylvania

Gardeners' Notes:


On Mar 28, 2015, coriaceous from ROSLINDALE, MA wrote:

Hyacinthiflora hybrids bloom about 10 days before the common lilacs, and are valuable for extending the lilac bloom season in a mixed planting.

They have the same delightful fragrance as common lilac. They are also shorter and tend to produce their flowers closer to nose level.

All are highly resistant to the powdery mildew that often afflicts common lilac. Some also have attractive reddish fall color.

All are descendents of crosses between S. vulgaris and S. oblata var dilatata.


On May 13, 2005, lmelling from Ithaca, NY (Zone 5b) wrote:

Very hardy, fragrant and beautiful cultivar. Dependable flowering when planted in correct location. Forms a rounded shrub and is covered in spring with single white flowers. Blooms several days before the other French Hybrids. Leaves turn purplish in fall. Height 10'-12" spread 10'-12'.

Note. I had this planted for two years in a spot where it had some shading in afternoon and it did not bloom nor grow well. I moved it the fall of the second year to it's present spot and it has taken off. This lilac definitely needs full sun and can handle a hot, well-drained spot during the summer in the north.