North America Non-native Plant

Tamonea

Botanical name: Tamonea

USDA symbol: TAMON

Life cycle: perennial

Habit: shrub

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

Tamonea: An Enigmatic Shrub from Puerto Rico If you’ve stumbled across the name tamonea in your plant research, you’ve discovered one of gardening’s more mysterious characters. This perennial shrub has managed to fly under the radar of most gardening guides, making it quite the botanical puzzle piece. What We Know ...

Tamonea: An Enigmatic Shrub from Puerto Rico

If you’ve stumbled across the name tamonea in your plant research, you’ve discovered one of gardening’s more mysterious characters. This perennial shrub has managed to fly under the radar of most gardening guides, making it quite the botanical puzzle piece.

What We Know About Tamonea

Tamonea is a perennial shrub that typically grows as a multi-stemmed woody plant, usually staying under 13 to 16 feet in height. Like many shrubs, it develops several stems that emerge from or near ground level, though it can occasionally grow taller or develop a single stem depending on environmental conditions.

Where Does Tamonea Grow?

Currently, tamonea is found in Puerto Rico, where it has established itself as a non-native species. Interestingly, this shrub has naturalized in the region, meaning it reproduces on its own without human intervention and has become part of the local landscape.

The Mystery Factor

Here’s where things get interesting – and a bit frustrating for curious gardeners. Despite being established in Puerto Rico, there’s surprisingly little documented information about tamonea’s specific growing requirements, appearance details, or ecological role. This lack of readily available information makes it something of an enigma in the plant world.

Should You Plant Tamonea?

Given the limited information available about this shrub, it’s difficult to make a strong recommendation either way. While tamonea isn’t currently listed as invasive, its non-native status and ability to naturalize means it’s worth approaching with some caution.

If you’re gardening in Puerto Rico and considering tamonea, you might want to:

  • Consult with local native plant societies or botanical gardens
  • Consider well-documented native alternatives that provide known benefits
  • Research whether any local regulations apply to non-native plantings

Native Alternatives to Consider

Since reliable growing information for tamonea is scarce, you might have better luck with well-documented native Puerto Rican shrubs that can provide similar landscape structure. Native plants typically offer better support for local wildlife and are adapted to regional growing conditions.

The Bottom Line

Tamonea represents one of those intriguing gaps in our horticultural knowledge. While it’s clearly capable of thriving in Puerto Rico’s climate, the lack of detailed growing information makes it a challenging choice for gardeners who like to plan ahead. If you do encounter this mysterious shrub in the wild, consider it a botanical treasure hunt – just remember to observe rather than collect, especially since we don’t know enough about its conservation status.

Sometimes the most interesting plants are the ones that keep their secrets, and tamonea certainly fits that description!

Tamonea

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

Lamiales

Family

Verbenaceae J. St.-Hil. - Verbena family

Genus

Tamonea Aubl. - tamonea

Species

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