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PlantFiles: Hybrid Lilac, Canadian Lilac
Syringa x hyacinthiflora 'California Rose'

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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: California Rose
Additional cultivar information: (Descano hybrid)

Category:
Shrubs
Trees

Height:
12-15 ft. (3.6-4.7 m)

Spacing:
10-12 ft. (3-3.6 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)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun
Sun to Partial Shade

Danger:
N/A

Bloom Color:
Rose/Mauve

Bloom Time:
Late Spring/Early Summer

Foliage:
Deciduous

Other details:
Flowers are fragrant
Average Water Needs; Water regularly; do not overwater

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:
Non-patented

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

Click thumbnail
to view:

By carolina_gardener
Thumbnail #1 of Syringa x hyacinthiflora by carolina_gardener

By carolina_gardener
Thumbnail #2 of Syringa x hyacinthiflora by carolina_gardener

Profile:

No positives
1 neutral
No negatives

Gardeners' Notes:

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

Common/French and Hyacinthiflora lilacs require substantial winter dormancy and do not bloom reliably south of Z6.

'California Rose' came out of the breeding program of Water Lammerts and staff at Descanso Gardens in La Canada Flintridge, CA, Z10a, and is recommended for planting in southern CA. It would also be worth testing in Z8 and Z9 in the southeastern US. However, I suspect that it has a different ancestry than indicated above.

Regional...

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

Fayetteville, North Carolina



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