North America Native Plant

Aceitillo Falso

Botanical name: Simarouba tulae

USDA symbol: SITU

Life cycle: perennial

Habit: shrub

Native status: Native to Puerto Rico  

Aceitillo Falso: A Mysterious Native Shrub from Puerto Rico Meet Simarouba tulae, commonly known as aceitillo falso – one of Puerto Rico’s more enigmatic native plants. While many native species have well-documented growing guides and garden applications, this particular shrub remains somewhat of a botanical mystery, making it an intriguing ...

Aceitillo Falso: A Mysterious Native Shrub from Puerto Rico

Meet Simarouba tulae, commonly known as aceitillo falso – one of Puerto Rico’s more enigmatic native plants. While many native species have well-documented growing guides and garden applications, this particular shrub remains somewhat of a botanical mystery, making it an intriguing subject for plant enthusiasts who appreciate the lesser-known gems of the Caribbean flora.

What is Aceitillo Falso?

Aceitillo falso is a perennial shrub that’s perfectly adapted to life in Puerto Rico’s unique climate. Like most shrubs, it’s a multi-stemmed woody plant that typically stays under 13-16 feet tall, though it can occasionally grow taller or develop a single stem depending on environmental conditions. This growth pattern makes it a potentially valuable addition to landscapes that need mid-sized woody plants.

Where Does It Grow?

This native beauty calls Puerto Rico home and appears to be endemic to the island. As a true Puerto Rican native, it has evolved alongside the island’s other flora and fauna, making it theoretically well-suited to local growing conditions.

Should You Grow Aceitillo Falso?

Here’s where things get interesting – and a bit challenging. While aceitillo falso has the appeal of being a true Puerto Rican native (which is always a plus for supporting local ecosystems), there’s remarkably little information available about its cultivation requirements, growth habits, or even its current conservation status.

The Appeal:

  • Native to Puerto Rico, supporting local biodiversity
  • Perennial shrub suitable for permanent landscape features
  • Unique addition that few gardeners will recognize
  • Likely well-adapted to Puerto Rican climate conditions

The Challenges:

  • Extremely limited cultivation information available
  • Unknown growing requirements and care needs
  • Uncertain availability from nurseries
  • Possible rarity in the wild

Growing Considerations

If you’re determined to try growing aceitillo falso, you’ll need to approach it as an experimental project. Since specific growing conditions are unknown, your best bet is to mimic the natural conditions where native Puerto Rican shrubs typically thrive.

Given Puerto Rico’s location, this plant likely grows in USDA hardiness zones 10-11, making it suitable only for tropical and subtropical regions or as a greenhouse plant in cooler climates.

A Word of Caution

Before attempting to grow this species, it’s crucial to source any plant material responsibly. Given the limited information available, aceitillo falso could potentially be rare or endangered. If you can locate this plant, ensure it comes from ethical sources – never harvest from the wild, and work only with reputable nurseries that can verify their propagation methods.

Alternative Native Options

If you’re drawn to the idea of growing native Puerto Rican shrubs but want something with better-documented growing requirements, consider these alternatives:

  • Other native Simarouba species with known cultivation needs
  • Well-documented Puerto Rican native shrubs from local nurseries
  • Native plants recommended by Puerto Rico’s Department of Natural Resources

The Bottom Line

Aceitillo falso represents both the excitement and frustration of working with lesser-known native plants. While it has the potential to be a wonderful addition to Puerto Rican gardens as a native species, the lack of available information makes it a plant for the truly adventurous gardener rather than someone looking for predictable results.

If you’re passionate about preserving Puerto Rico’s native flora and don’t mind a bit of horticultural detective work, aceitillo falso might be worth investigating further. Just remember to source responsibly and be prepared for some trial and error along the way.

Aceitillo Falso

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

Sapindales

Family

Simaroubaceae DC. - Quassia family

Genus

Simarouba Aubl. - simarouba

Species

Simarouba tulae Urb. - aceitillo falso

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