North America Non-native Plant

False Locust

Botanical name: Hebestigma cubense

USDA symbol: HECU10

Life cycle: perennial

Habit: tree

Native status: Non-native, reproduces and persists in the wild in Puerto Rico  

False Locust (Hebestigma cubense): A Lesser-Known Tree with Limited Information If you’ve stumbled across the name false locust or Hebestigma cubense in your plant research, you’re not alone in wondering what exactly this tree is all about. This perennial tree species is quite the mystery in the gardening world, with ...

False Locust (Hebestigma cubense): A Lesser-Known Tree with Limited Information

If you’ve stumbled across the name false locust or Hebestigma cubense in your plant research, you’re not alone in wondering what exactly this tree is all about. This perennial tree species is quite the mystery in the gardening world, with surprisingly little information available about its characteristics and cultivation needs.

What We Know About False Locust

Hebestigma cubense, commonly known as false locust, is a perennial tree that typically grows to impressive heights of 13-16 feet or more. Like many tree species, it normally develops a single trunk, though environmental conditions can sometimes encourage a multi-stemmed or shorter growth form.

The species name cubense suggests this tree has Cuban origins, though it has found its way to other locations, including Puerto Rico, where it’s established itself as a non-native species that reproduces naturally without human intervention.

Geographic Distribution

Currently, false locust is documented as growing in Puerto Rico, where it has become naturalized despite not being native to the region. The tree’s ability to reproduce spontaneously and persist in this tropical environment speaks to its adaptability.

Should You Plant False Locust?

Here’s where things get tricky. While false locust isn’t currently listed as invasive or noxious, the lack of detailed information about this species makes it difficult to recommend for home gardens. We simply don’t know enough about:

  • Its specific growing requirements
  • Potential impacts on local ecosystems
  • Care and maintenance needs
  • Benefits to pollinators and wildlife
  • Suitable climate zones

Consider Native Alternatives

Given the limited information available about false locust and its non-native status, you might want to consider native tree alternatives that offer well-documented benefits to your local ecosystem. Native trees typically:

  • Support local wildlife and pollinators
  • Are adapted to local growing conditions
  • Require less maintenance once established
  • Help preserve regional biodiversity

Check with your local native plant society or extension office for recommendations on native trees that might serve the same purpose you had in mind for false locust.

The Bottom Line

While false locust remains an intriguing species, the lack of available cultivation information makes it challenging to grow successfully or recommend confidently. If you’re set on trying something unusual in your landscape, make sure you’re prepared for some trial and error – and keep an eye on how it behaves in your garden to ensure it doesn’t become problematic.

Sometimes the most responsible approach to gardening is admitting when we simply don’t know enough about a plant to give it our full endorsement. False locust appears to be one of those plants that needs more research before it can earn a spot in our recommended planting lists.

False Locust

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Hebestigma Urb. - false locust

Species

Hebestigma cubense (Kunth) Urb. - false locust

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