North America Native Plant

Yerba De Peo

Botanical name: Porophyllum leiocarpum

USDA symbol: POLE9

Life cycle: annual

Habit: forb

Native status: Native to Puerto Rico  

Synonyms: Porophyllum macrocephalum DC. var. leiocarpum Urb. (POMAL)   

Yerba de Peo: A Lesser-Known Puerto Rican Native Worth Discovering If you’re a gardener in Puerto Rico looking to embrace truly local flora, you might want to get acquainted with yerba de peo (Porophyllum leiocarpum). This unassuming little annual herb represents the kind of authentic Caribbean botanical heritage that’s often ...

Yerba de Peo: A Lesser-Known Puerto Rican Native Worth Discovering

If you’re a gardener in Puerto Rico looking to embrace truly local flora, you might want to get acquainted with yerba de peo (Porophyllum leiocarpum). This unassuming little annual herb represents the kind of authentic Caribbean botanical heritage that’s often overlooked in favor of flashier ornamentals.

What Exactly Is Yerba de Peo?

Yerba de peo belongs to the Porophyllum genus, a group of aromatic herbs in the sunflower family (Asteraceae). As an annual forb, this plant completes its entire life cycle in one growing season, sprouting from seed, flowering, setting seed, and dying back all within a year. Don’t let the forb classification intimidate you – it simply means this is a soft-stemmed herbaceous plant without woody tissue, the botanical equivalent of your garden’s more delicate residents.

A True Puerto Rican Native

What makes yerba de peo special is its authentic island heritage. This plant is endemic to Puerto Rico, meaning it evolved here and calls this archipelago home. In our increasingly globalized plant world, having something genuinely local in your garden connects you to the natural history of your landscape in a way that imported exotics simply can’t match.

You’ll find yerba de peo naturally occurring throughout Puerto Rico, where it has adapted to the island’s unique climate and growing conditions over thousands of years.

Why Consider Growing Yerba de Peo?

Here’s where we hit a bit of a botanical mystery. While we know yerba de peo is a legitimate Puerto Rican native, detailed information about its cultivation, appearance, and specific garden uses remains surprisingly scarce. This isn’t uncommon with lesser-studied native species – sometimes the most authentic local plants are the ones that haven’t made it into mainstream horticultural references.

What we can say is that as a member of the Porophyllum genus, it likely shares some characteristics with its better-known relatives: aromatic foliage and small but numerous flowers typical of the sunflower family.

The Growing Challenge

If you’re intrigued by the idea of growing this authentic Puerto Rican native, you’ll need to embrace a bit of botanical detective work. Since detailed cultivation information isn’t readily available, consider these general approaches:

  • Start by observing where yerba de peo grows naturally in the wild
  • Collect seeds responsibly (and legally) from wild populations
  • Try growing it in conditions similar to other Caribbean natives
  • Connect with local botanists or native plant societies for insights

The Bigger Picture

Sometimes the most rewarding garden plants are the ones that require a little extra effort to understand and cultivate. Yerba de peo represents an opportunity to connect with Puerto Rico’s botanical heritage in a way that goes beyond the typical tropical garden palette. While we may not have all the answers about growing this plant, that’s part of what makes native gardening an ongoing adventure.

If you’re serious about cultivating authentic Caribbean flora, consider yerba de peo as part of a broader exploration of Puerto Rican natives. Even if this particular species proves challenging to grow, the journey of discovering and supporting indigenous plants enriches both your garden and your connection to place.

Who knows? You might just become one of the first gardeners to crack the code on successfully cultivating this little-known island native.

Yerba De Peo

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

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Porophyllum Adans. - poreleaf

Species

Porophyllum leiocarpum (Urb.) Rydb. - yerba de peo

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