North America Non-native Plant

Leucaena Insularum Var. Guamensis

Botanical name: Leucaena insularum var. guamensis

USDA symbol: LEING2

Life cycle: perennial

Habit: shrub

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

Leucaena insularum var. guamensis: A Mysterious Native Shrub Meet Leucaena insularum var. guamensis, a perennial shrub that’s about as elusive as a garden gnome at midnight. This woody plant belongs to the legume family and represents a specific variety of Leucaena insularum that, frankly, doesn’t get much press in the ...

Leucaena insularum var. guamensis: A Mysterious Native Shrub

Meet Leucaena insularum var. guamensis, a perennial shrub that’s about as elusive as a garden gnome at midnight. This woody plant belongs to the legume family and represents a specific variety of Leucaena insularum that, frankly, doesn’t get much press in the gardening world.

What We Know (And What We Don’t)

Here’s the thing about this particular plant – it’s a bit of a mystery. While we know it’s a perennial shrub that typically grows as a multi-stemmed woody plant, reaching heights of 13 to 16 feet under normal conditions, much of its story remains untold. The plant can sometimes grow taller than 5 meters or develop a single stem depending on environmental conditions, showing it’s got some flexibility in its growth patterns.

The Geographic Puzzle

Unfortunately, the specific geographic distribution of Leucaena insularum var. guamensis remains unknown, making it difficult to pinpoint where this shrub naturally calls home. Without this crucial information, we can’t provide you with a map of its native range.

Should You Plant It?

Here’s where things get a bit tricky. Without knowing this plant’s native status, invasive potential, or specific growing requirements, we can’t give you a definitive thumbs up or down. It’s like being asked to recommend a restaurant you’ve never been to – we just don’t have enough information to make a solid recommendation.

If you’re considering this plant for your garden, we’d suggest doing some serious detective work first:

  • Contact your local extension office or native plant society
  • Research whether it’s appropriate for your specific region
  • Verify that it’s not listed as invasive in your area
  • Consider well-documented native alternatives instead

Growing Conditions: The Great Unknown

Without specific information about this variety’s preferred growing conditions, USDA hardiness zones, or care requirements, we’re flying blind when it comes to cultivation advice. This is definitely one of those plants where you’d want to consult with local experts or botanical institutions before attempting to grow it.

The Bottom Line

Leucaena insularum var. guamensis might be an interesting addition to the right garden, but the lack of readily available information makes it a risky choice for most gardeners. If you’re drawn to the idea of growing a Leucaena species, consider researching better-documented varieties or consulting with botanical experts who might have more specific knowledge about this particular plant.

Sometimes the most mysterious plants are the most intriguing, but in gardening, it’s often better to stick with species that come with a good instruction manual!

Leucaena Insularum Var. Guamensis

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

Leucaena Benth. - leadtree

Species

Leucaena insularum (Guill.) Daniker

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