North America Native Plant

Almendrillo

Botanical name: Byrsonima wadsworthii

USDA symbol: BYWA

Life cycle: perennial

Habit: shrub

Native status: Native to Puerto Rico  

Almendrillo: Discovering Puerto Rico’s Native Treasure Meet the almendrillo (Byrsonima wadsworthii), a charming native shrub that calls Puerto Rico home exclusively. This lesser-known gem represents the unique botanical heritage of the Caribbean, though it remains somewhat mysterious in the gardening world due to limited cultivation information. What Makes Almendrillo Special? ...

Almendrillo: Discovering Puerto Rico’s Native Treasure

Meet the almendrillo (Byrsonima wadsworthii), a charming native shrub that calls Puerto Rico home exclusively. This lesser-known gem represents the unique botanical heritage of the Caribbean, though it remains somewhat mysterious in the gardening world due to limited cultivation information.

What Makes Almendrillo Special?

Almendrillo is a perennial shrub that typically grows as a multi-stemmed woody plant, usually reaching heights of 13 to 16 feet (4 to 5 meters). Like many tropical natives, it can sometimes surprise you by growing taller or developing a single stem under the right environmental conditions. This adaptability makes it an intriguing choice for those interested in authentic Puerto Rican flora.

Where Does It Come From?

This plant is exclusively native to Puerto Rico, making it a true island endemic. You won’t find wild populations of Byrsonima wadsworthii anywhere else in the world, which makes it both special and potentially vulnerable. Its entire natural range is contained within Puerto Rico’s diverse ecosystems.

Is Almendrillo Right for Your Garden?

Here’s where things get a bit tricky – and honestly, quite exciting for the adventurous gardener. Almendrillo falls into that category of plants that botanists know about, but gardeners haven’t fully explored yet. This means there’s limited information available about its specific growing requirements, aesthetic qualities, and garden performance.

If you’re considering adding this native Puerto Rican species to your landscape, here are some important considerations:

  • Very limited cultivation information is available
  • As a Puerto Rican endemic, it likely requires tropical growing conditions
  • May have specialized habitat needs that aren’t well documented
  • Could be rare or uncommon, requiring responsible sourcing

Growing Conditions and Care

While specific growing requirements for almendrillo aren’t well documented, we can make some educated guesses based on its native habitat and botanical family. As a Puerto Rican native, it most likely thrives in:

  • Warm, tropical climates (likely USDA zones 10-12)
  • Well-draining soils typical of Caribbean environments
  • Consistent moisture without waterlogging
  • Protection from cold temperatures and frost

The Responsible Gardening Approach

Given the limited information available about this species, here’s what we recommend:

  • Only source plants from reputable nurseries specializing in native Puerto Rican species
  • Never collect from wild populations
  • Consider it an experimental addition to your garden
  • Document your growing experience to help expand knowledge about this species
  • Connect with local botanical gardens or native plant societies for guidance

Alternative Native Options

If you’re drawn to Puerto Rican native shrubs but want something with more established cultivation information, consider exploring other well-documented native species from the island. Local native plant societies can provide excellent recommendations for proven performers in Puerto Rican gardens.

The Bottom Line

Almendrillo represents the fascinating world of understudied native plants. While we can’t provide a complete growing guide due to limited research, it offers an opportunity for adventurous gardeners to participate in expanding our knowledge of Caribbean flora. If you choose to grow this species, you’ll be joining a small community of gardeners helping to preserve and understand Puerto Rico’s unique botanical heritage.

Remember, the best approach with any rare or understudied native plant is patience, observation, and responsible sourcing. Who knows? Your experience growing almendrillo might just help future gardeners successfully cultivate this Puerto Rican treasure.

Almendrillo

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

Polygalales

Family

Malpighiaceae Juss. - Barbados Cherry family

Genus

Byrsonima Rich. ex Kunth - byrsonima

Species

Byrsonima wadsworthii Little - almendrillo

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