North America Native Plant

Guasabara

Botanical name: Eugenia eggersii

USDA symbol: EUEG

Life cycle: perennial

Habit: shrub

Native status: Native to Puerto Rico  

Guasabara: A Rare Native Treasure for Puerto Rican Gardens If you’re passionate about native gardening in Puerto Rico and love discovering botanical gems, let me introduce you to guasabara (Eugenia eggersii) – a fascinating native shrub that’s as rare as it is special. This little-known member of the myrtle family ...

Rare plant alert!

Region: Conservation status by state

Status: S2S3: Status is uncertain but is somewhere between the following rankings: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Guasabara: A Rare Native Treasure for Puerto Rican Gardens

If you’re passionate about native gardening in Puerto Rico and love discovering botanical gems, let me introduce you to guasabara (Eugenia eggersii) – a fascinating native shrub that’s as rare as it is special. This little-known member of the myrtle family represents the kind of unique flora that makes Puerto Rico’s ecosystem so extraordinary.

What Makes Guasabara Special?

Guasabara is a perennial shrub that’s exclusively native to Puerto Rico – you won’t find this beauty growing wild anywhere else in the world! As an endemic species, it plays a unique role in Puerto Rico’s natural heritage. The plant typically grows as a multi-stemmed woody shrub, usually reaching heights of less than 13-16 feet, though it can sometimes surprise you by growing taller or developing a single stem depending on its environment.

Where Does Guasabara Grow?

This native gem is found only in Puerto Rico, where it has adapted to the island’s unique climate and growing conditions over thousands of years. Its limited geographic distribution makes it a true treasure of Caribbean flora.

Important Conservation Considerations

Here’s something crucial every gardener should know: guasabara has a Global Conservation Status of S2S3, which means it’s considered rare and potentially vulnerable. This rarity status is both exciting and sobering – exciting because you’d be growing something truly special, but sobering because it reminds us how precious these native species are.

If you’re interested in growing guasabara, please only obtain plants from reputable, responsible sources that don’t harvest from wild populations. Better yet, look for nurseries that propagate native plants ethically or participate in conservation efforts.

Growing Conditions and Garden Role

One interesting characteristic of guasabara is its wetland status – it’s classified as a facultative wetland plant in the Caribbean region. This means it usually thrives in wetland conditions but can also adapt to drier sites. This flexibility could make it a valuable addition to gardens with varying moisture levels or rain gardens designed to manage stormwater.

Unfortunately, detailed information about this rare species’ specific growing requirements, care needs, and garden applications is limited – a common challenge with lesser-known native plants. This scarcity of information actually highlights why growing and observing native species like guasabara can be so rewarding for dedicated gardeners who enjoy being botanical pioneers.

Why Choose Native Plants Like Guasabara?

Even with limited growing information available, there are compelling reasons to consider rare natives like guasabara:

  • Support local biodiversity and ecosystem health
  • Preserve Puerto Rico’s unique botanical heritage
  • Enjoy plants perfectly adapted to local conditions
  • Create habitat for native wildlife species
  • Contribute to conservation efforts through responsible cultivation

The Bottom Line

Guasabara represents the fascinating world of rare native plants that deserve our attention and protection. While detailed growing guides may be scarce, the opportunity to cultivate this Puerto Rican endemic makes it a worthwhile addition for dedicated native plant enthusiasts. Just remember – if you decide to grow guasabara, source it responsibly and consider yourself a steward of Puerto Rico’s precious natural heritage.

Sometimes the most rewarding gardening experiences come from growing the plants that need us most. Guasabara might just be one of those special species that connects you more deeply to the unique natural world of Puerto Rico.

Guasabara

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

Myrtales

Family

Myrtaceae Juss. - Myrtle family

Genus

Eugenia L. - stopper

Species

Eugenia eggersii Kiaersk. - guasabara

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