Syringa reticulata 'Ivory Silk'
Common Name(s):
Japanese tree lilac
Giant tree lilac
Synonym:
Syringa pekinensis
Beijing lilac
Flower:
White
Blooms :
May
to:
Jun
Showy 4 petaled flower in panicles
Botanical Description
Fragrant?
YES
Family:
Oleaceae
Med - Lg Shrub (usually >3' and never < 1.5')
Foliage:
Green
Leaves opposite, lanceolate to ovate 6" long
Fall Color?
NO
Deciduous
Photo by:
Heading 6
Oregon Native?
NO
West State Native?
NO
Origins:
Northern China
Site Selection
Minimum USDA Hardiness Zone:
3
Water Needs:
M
Sun Needs:
Full Sun
Deer Resistant?
YES
Firewise?
YES
Height:
20-30'
Spread:
15-20'
Growth Rate:
Medium
Native Habitat:
Wooded areas on slopes, valleys, grasslands
Soil:
Rich, moderately acidic
Care Recommendations
Maintenance Level:
Low
Fertilizer:
Use a balanced granular fertilizer, spread around root zone 12-15" away from trunk, use only in spring
Mulch:
Use organic mulches like ground hardwoods in a 2-3" layerr 1-4" from trunk, avoid fresh mulches, refresh every spring
Plant in full sun, water as neccassary to prevent stress, give light application of balanced, slow-release fertilizer in early spring, keep pruning minimal, monitor for pests and diseases and act accordingly if found
Long Term:
Winter:
If there is no precipitation, can water on warmer days, apply mulch if not done in fall, wrap young trees
Spring:
Perform only light corrective pruning, maintain 2-3" layer of organic mulch, ensure adequate moisture, inspect for signs of pests or disease
Summer:
Aim for 1" of water/week, prune immediately after flowering, monitor for pests and disease, apply mulch if not done earlier
Fall:
Plant must enter winter fully hydrated, mulch with a 3-4" layer of wood chips or bark, keep area clear of fallen leaves
General Care Comments:
Plant in full sun, well-drained soil, keep pruning minimal, fertilize in early spring, mulch to retain moisture
Common Problems
May escape and displace native plants
Diseases:
Bacterial blight, leaf spots, wilt, ring spot virus
Insects:
Lilac borer, leafminers, scale, aphids, caterpillars, leafhoppers
Environmental Problems:
Excessive moisture leads to fungal diseases, early spring frost, invasiveness
Pests:
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