North America Non-native Plant

Syringa Oblata Dilatata

Botanical name: Syringa oblata dilatata

USDA symbol: SYOBD

Native status: Not native but doesn't reproduce and persist in the wild

Syringa oblata dilatata: A Mysterious Lilac Worth Investigating If you’ve stumbled upon the name Syringa oblata dilatata while researching lilacs for your garden, you’re not alone in wondering exactly what this plant is. This particular botanical name presents quite the puzzle in the gardening world, and there’s a good reason ...

Syringa oblata dilatata: A Mysterious Lilac Worth Investigating

If you’ve stumbled upon the name Syringa oblata dilatata while researching lilacs for your garden, you’re not alone in wondering exactly what this plant is. This particular botanical name presents quite the puzzle in the gardening world, and there’s a good reason why you might be having trouble finding detailed information about it.

The Name Game: What’s in a Botanical Name?

Syringa oblata dilatata appears to be either an extremely rare variety or potentially an outdated taxonomic classification that isn’t widely recognized in current botanical literature. While the base species Syringa oblata (commonly known as Early Lilac or Broad-leaved Lilac) is well-documented and beloved by gardeners, the dilatata designation remains elusive in reliable horticultural sources.

Geographic Mystery

Without clear documentation of this specific variety, pinpointing its exact native range and geographical distribution proves challenging. The parent species Syringa oblata hails from northern China and Korea, but whether dilatata represents a distinct geographic form or cultivated variety remains unclear.

Should You Plant It?

Here’s where things get tricky for the home gardener. Given the uncertainty surrounding this particular botanical name, here are some considerations:

  • If you encounter plants sold under this name, verify the source and ask for detailed information about the plant’s characteristics
  • Consider whether you might actually be looking at the well-known Syringa oblata instead
  • Research the reputation of any nursery or supplier offering this specific variety

A Safer Alternative

If you’re drawn to the idea of growing what might be Syringa oblata dilatata, consider starting with the reliable and well-documented Syringa oblata (Early Lilac). This species offers:

  • Beautiful, fragrant purple or white flower clusters in early spring
  • Heart-shaped leaves that turn yellow to reddish-purple in fall
  • Hardy nature suitable for USDA zones 3-7
  • Excellent pollinator support for bees and butterflies

Growing Conditions for Lilacs

While we can’t provide specific care instructions for Syringa oblata dilatata due to limited reliable information, lilacs in the Syringa oblata group generally prefer:

  • Full sun to partial shade
  • Well-draining, slightly alkaline soil
  • Regular watering during establishment
  • Annual pruning after flowering

The Bottom Line

Sometimes in the plant world, we encounter botanical names that lead us down interesting rabbit holes. Syringa oblata dilatata appears to be one of those cases. Rather than taking a gamble on an uncertain plant designation, consider exploring the many wonderful and well-documented lilac varieties available to home gardeners.

If you’re specifically seeking this plant for research purposes or have encountered it in historical garden documentation, we’d recommend consulting with botanical institutions or lilac specialists who might have more detailed information about rare or historical varieties.

Remember, successful gardening often starts with choosing plants that are well-understood and suited to your specific growing conditions. There are plenty of beautiful, reliable lilac options that will reward you with years of fragrant blooms and wildlife benefits!

Syringa Oblata Dilatata

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Scrophulariales

Family

Oleaceae Hoffmanns. & Link - Olive family

Genus

Syringa L. - lilac

Species

Syringa oblata Lindl.

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA