North America Non-native Plant

Sri Lanka Privet

Botanical name: Ligustrum robustum var. walkeri

USDA symbol: LIROW

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

Sri Lanka Privet: A Mystery Plant with Limited Information If you’ve stumbled upon the name Sri Lanka privet (Ligustrum robustum var. walkeri) in your plant research, you might be wondering what exactly this plant is and whether it belongs in your garden. Well, you’re not alone in your curiosity – ...

Sri Lanka Privet: A Mystery Plant with Limited Information

If you’ve stumbled upon the name Sri Lanka privet (Ligustrum robustum var. walkeri) in your plant research, you might be wondering what exactly this plant is and whether it belongs in your garden. Well, you’re not alone in your curiosity – this particular variety is something of an enigma in the gardening world.

What We Know (And Don’t Know)

Sri Lanka privet is a variety of Ligustrum robustum, but here’s where things get tricky: there’s remarkably little documented information available about this specific variety. While the Ligustrum genus is well-known for containing both useful landscape plants and problematic invasive species, var. walkeri seems to fly under the radar of most botanical databases and gardening resources.

The geographical distribution of this variety remains unclear, though the common name suggests some connection to Sri Lanka. Without reliable information about its native range, growth habits, or ecological impact, it’s difficult to provide definitive guidance about cultivation.

The Challenge of Undocumented Varieties

When a plant variety has limited documentation, it presents several challenges for gardeners:

  • Unknown invasive potential – some Ligustrum species are highly invasive
  • Uncertain growing requirements and care needs
  • Unknown wildlife and pollinator benefits
  • Unclear hardiness zones and climate adaptability
  • Potential difficulty sourcing plants or seeds

A Word of Caution

Given that many Ligustrum species have become problematic invasive plants in various regions, and without clear information about var. walkeri’s behavior in cultivation, we’d recommend proceeding with extreme caution if you encounter this variety. The Ligustrum genus has a mixed reputation – while some species make attractive landscape plants, others have escaped cultivation and caused significant ecological damage.

Better Alternatives

Instead of risking an unknown variety, consider these approaches:

  • Research well-documented native alternatives that provide similar aesthetic benefits
  • Consult with local extension offices about suitable plants for your specific region
  • Choose plants with known wildlife benefits and established cultivation practices
  • If you’re interested in privets specifically, research non-invasive alternatives that are well-documented

If You Encounter This Plant

Should you come across Ligustrum robustum var. walkeri in the wild or in cultivation, consider documenting it with photos and location information. Contributing to citizen science projects or contacting local botanical institutions could help fill in the knowledge gaps about this mysterious variety.

The world of plants is vast and full of surprises, but when it comes to introducing new species to your garden, it’s always better to err on the side of caution – especially when dealing with genera known for invasive tendencies.

Sri Lanka Privet

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

Ligustrum L. - privet

Species

Ligustrum robustum (Roxb.) Blume - wild privet

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