Shrubs

Syringa x 'Old Glory' (Li)

Syringa 'Old Glory'

Also known as Old Glory Dwarf Lilac

$54.95

Size

☀SunFull sun
💧WaterLow to moderate
🌡Zones3-7
🦌DeerResistant
🌊CoastalSuitable

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About This Plant

Syringa x 'Old Glory' (Li), 'Old Glory', is valued for seasonal interest, structure, and the role it plays in PNW gardens.

Lilacs (Syringa) are beloved cottage-garden shrubs with intensely fragrant late-spring flower panicles in lavender, purple, white, pink, or yellow. The classic common lilac (S. vulgaris) needs cold winters to bloom well; S. meyeri 'Palibin' and the Korean lilac series perform better in mild PNW climates.

Full sun suits this species. Plant in moist, well-drained, neutral to slightly alkaline soil. Hardy USDA Zone 3 to 8. Full sun is essential , lilacs flower poorly in shade. Watch for powdery mildew on foliage in humid conditions and lilac borer on stressed plants. Prune just after flowering to shape; avoid late pruning which removes next year's flower buds. Mild PNW winters can reduce flowering on cold-climate cultivars.

For a Pacific Northwest native flowering shrub of similar character, consider Philadelphus lewisii (Mock Orange, Idaho state flower) for fragrant white spring blooms, or Holodiscus discolor (Oceanspray) for cascading cream-white summer panicles supporting native pollinators.

Plant Details

Botanical
Syringa 'Old Glory'
Common name
Old Glory Dwarf Lilac
Lifecycle
Perennial
Foliage type
Deciduous
Mature size
6-8 ft tall × 5-7 ft wide
Growth rate
Slow
Bloom time
Late spring
Bloom color
Purple, White, Pink, Yellow
Foliage color
Green

Care Notes

Grow in moist, well-drained, neutral to slightly alkaline soil. Prune just after flowering to shape; avoid late-season pruning which removes next year's flower buds. Watch for powdery mildew on foliage in humid conditions and lilac borer on stressed or damaged stems. Mild PNW winters may reduce flowering on this cold-climate species; ensure maximum sun exposure.

Garden Attributes

  • Pacific NW native
  • Deer resistant
  • Coastal suitable
  • Grown organically
  • Pollinator value: Bees, Butterflies, Hummingbirds, Moths
  • Wildlife: Pollinator support
Row of potted bareroot conifer trees at Dragonfly Farm

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