North America Native Plant

Guama

Botanical name: Reynosia guama

USDA symbol: REGU

Life cycle: perennial

Habit: shrub

Native status: Native to Puerto Rico âš˜ Native to the U.S. Virgin Islands  

Guama: A Hidden Gem of Caribbean Native Gardening If you’re passionate about native gardening in the Caribbean, you might want to get acquainted with guama (Reynosia guama), a lesser-known but worthy native shrub that deserves more attention in our island landscapes. While it may not be the most famous plant ...

Guama: A Hidden Gem of Caribbean Native Gardening

If you’re passionate about native gardening in the Caribbean, you might want to get acquainted with guama (Reynosia guama), a lesser-known but worthy native shrub that deserves more attention in our island landscapes. While it may not be the most famous plant in the gardening world, this perennial shrub has some compelling qualities that make it worth considering for your native plant collection.

Where Guama Calls Home

Guama is a true Caribbean native, naturally occurring in Puerto Rico and the U.S. Virgin Islands. This makes it a fantastic choice for gardeners in these regions who want to support local ecosystems and create authentic island landscapes that reflect the natural heritage of their area.

What Does Guama Look Like?

As a shrub, guama typically grows as a multi-stemmed woody plant that usually stays under 13 to 16 feet in height. Like most shrubs, it develops several stems from or near ground level, creating a bushy appearance that can add structure and interest to your landscape design.

Why Consider Planting Guama?

Here are some compelling reasons to include this native shrub in your garden:

  • True native status: Supporting plants that naturally belong in your ecosystem
  • Perennial reliability: Once established, it’s a long-term addition to your landscape
  • Manageable size: Perfect for medium-sized landscapes where you need vertical interest without overwhelming the space
  • Authentic island gardening: Helps create landscapes that truly reflect Caribbean flora

The Challenge: Limited Growing Information

Here’s where things get interesting (and a bit challenging). Guama falls into that category of native plants that haven’t received much attention in mainstream horticulture. This means specific growing conditions, care requirements, and propagation methods aren’t widely documented in typical gardening resources.

If you’re determined to grow guama, your best bet is to:

  • Connect with local native plant societies in Puerto Rico or the U.S. Virgin Islands
  • Consult with botanical gardens or universities in the region
  • Look for native plant nurseries that might have experience with lesser-known species
  • Observe the plant in its natural habitat to understand its preferred growing conditions

Supporting Native Plant Conservation

By showing interest in plants like guama, you’re participating in an important conservation effort. Many native species get overlooked simply because they’re not well-known in commercial horticulture. Your curiosity and willingness to grow lesser-known natives helps preserve genetic diversity and supports the full spectrum of your local ecosystem.

The Bottom Line

While guama might require a bit more detective work than your typical garden center purchase, it represents an opportunity to be a true pioneer in native gardening. If you’re in Puerto Rico or the U.S. Virgin Islands and love the idea of growing something truly local and unique, guama could be your next gardening adventure.

Just remember: when dealing with lesser-known native species, patience and local expertise are your best friends. The reward of successfully growing a plant that few others have in their gardens? Pretty spectacular.

Guama

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

Rhamnales

Family

Rhamnaceae Juss. - Buckthorn family

Genus

Reynosia Griseb. - darlingplum

Species

Reynosia guama Urb. - guama

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