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PlantFiles: Japanese Tree Lilac
Syringa reticulata 'Ivory Silk'

Family: Oleaceae (oh-lee-AY-see-ee) (Info)
Genus: Syringa (si-RING-gah) (Info)
Species: reticulata (reh-tick-yoo-LAY-tuh) (Info)
Cultivar: Ivory Silk

2 vendors have this plant for sale.

2 members have or want this plant for trade.


12-15 ft. (3.6-4.7 m)
15-20 ft. (4.7-6 m)

10-12 ft. (3-3.6 m)

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)

Sun Exposure:
Full Sun
Sun to Partial Shade


Bloom Color:
White/Near White

Bloom Time:
Mid Spring
Late Spring/Early Summer


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:

Propagation Methods:
From woody stem cuttings
By simple layering

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

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There are a total of 12 photos.
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1 positive
2 neutrals
No negatives

Gardeners' Notes:

Neutral Carolsflowers On Feb 10, 2013, Carolsflowers from Brunswick, MO (Zone 5a) wrote:

Very pretty when flowering. It also grew well for me. The down side was the need to frequently cut the suckers that sprouted from the roots& at the base of the tree. A few roots also wanted to raise above the ground. Not a problem in the flowers. I finally cut it down due to the sucker problem.

Neutral ASIATIC On May 17, 2012, ASIATIC from Minneapolis, MN wrote:

Hi, just an addition to locations. We can also grow these fragrant trees in zone 4 in Minnesota.

Positive paani On Jan 31, 2005, paani from Saint Louis, MO (Zone 6a) wrote:

The Missouri Botanical Gardens reports that this tree has good resistance to powdery mildew and other common lilac diseases.


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

Louisville, Kentucky
Plymouth, Michigan
Traverse City, Michigan
Minneapolis, Minnesota
Brunswick, Missouri
Kearney, Nebraska
Middletown, Ohio
Youngstown, Ohio

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