North America Native Plant

Margarett’s Clearweed

Botanical name: Pilea margarettiae

USDA symbol: PIMA5

Life cycle: perennial

Habit: subshrub

Native status: Native to Puerto Rico âš˜ Native to the U.S. Virgin Islands  

Margarett’s Clearweed: A Little-Known Caribbean Native If you’re passionate about native plants and happen to live in or visit the Caribbean, you might stumble upon a fascinating little plant called Margarett’s clearweed (Pilea margarettiae). This perennial herb is one of those quiet garden gems that doesn’t make much noise but ...

Margarett’s Clearweed: A Little-Known Caribbean Native

If you’re passionate about native plants and happen to live in or visit the Caribbean, you might stumble upon a fascinating little plant called Margarett’s clearweed (Pilea margarettiae). This perennial herb is one of those quiet garden gems that doesn’t make much noise but has its own unique charm for those who appreciate native flora.

What Exactly Is Margarett’s Clearweed?

Margarett’s clearweed is a herbaceous perennial that belongs to the nettle family, though don’t worry—it won’t sting you! As a forb, it’s essentially a soft-stemmed plant without woody tissue, making it quite different from shrubs or trees. Think of it as nature’s way of creating ground-level greenery that comes back year after year.

This little plant is a true Caribbean native, calling both Puerto Rico and the U.S. Virgin Islands home. It’s one of those plants that has quietly been doing its thing in the tropical landscape long before gardeners started paying attention to native species.

Should You Consider Growing Margarett’s Clearweed?

Here’s where things get a bit tricky. While Margarett’s clearweed has the appeal of being a true native species—which is fantastic for supporting local ecosystems—there’s remarkably little information available about growing this plant in cultivation. It’s like trying to follow a recipe that’s missing half the ingredients list!

The Pros:

  • It’s a genuine native species, supporting local biodiversity
  • As a perennial, it should return year after year once established
  • Being in the Pilea genus, it’s likely relatively easy-going
  • Perfect for gardeners who love rare and unusual plants

The Challenges:

  • Limited availability in nurseries
  • Scarce information about specific growing requirements
  • Unknown wildlife and pollinator benefits
  • Unclear garden design applications

Growing Conditions and Care

Since specific growing information for Margarett’s clearweed is scarce, we have to make educated guesses based on its native habitat and plant family characteristics. Being native to Puerto Rico and the U.S. Virgin Islands suggests it’s adapted to:

  • Warm, tropical conditions (likely USDA zones 10-11)
  • Year-round growing season
  • Humid environments
  • Well-draining soils typical of Caribbean islands

If you’re determined to try growing this plant, your best bet would be to mimic the conditions of its native Caribbean habitat as closely as possible.

The Bottom Line

Margarett’s clearweed represents both the excitement and frustration of native plant gardening. On one hand, it’s a genuine native species that could potentially play an important role in supporting local ecosystems. On the other hand, the lack of cultivation information makes it a bit of a gardening adventure.

If you’re in Puerto Rico or the U.S. Virgin Islands and you’re feeling adventurous, this could be an interesting plant to seek out and experiment with. Just remember that you’ll be pioneering its cultivation, so keep detailed notes about what works (and what doesn’t) for future native plant enthusiasts!

For most gardeners, you might want to start with better-documented native Pilea species or other Caribbean natives where growing information is more readily available. Sometimes the most responsible approach to supporting native plants is to begin with those we understand well enough to grow successfully.

Margarett’s Clearweed

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Hamamelididae

Order

Urticales

Family

Urticaceae Juss. - Nettle family

Genus

Pilea Lindl. - clearweed

Species

Pilea margarettiae Britton - Margarett's clearweed

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