North America Native Plant

West Indian Milkwort

Botanical name: Polygala hecatantha

USDA symbol: POHE6

Life cycle: perennial

Habit: forb

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

West Indian Milkwort: A Lesser-Known Caribbean Native Worth Discovering If you’re looking to add some authentic Caribbean flair to your garden and you happen to live in Puerto Rico or the U.S. Virgin Islands, you might want to get acquainted with West Indian milkwort. This charming little native plant goes ...

West Indian Milkwort: A Lesser-Known Caribbean Native Worth Discovering

If you’re looking to add some authentic Caribbean flair to your garden and you happen to live in Puerto Rico or the U.S. Virgin Islands, you might want to get acquainted with West Indian milkwort. This charming little native plant goes by the botanical name Polygala hecatantha, and while it may not be the showiest plant in your garden, it has some qualities that make it worth considering for the right gardener.

What Exactly Is West Indian Milkwort?

West Indian milkwort is a perennial forb, which is just a fancy way of saying it’s a non-woody plant that comes back year after year. Think of it as an herbaceous perennial that stays relatively low to the ground and doesn’t develop thick, woody stems like shrubs or trees. It’s part of the milkwort family, though don’t let the name fool you – it has nothing to do with actual milk!

Where Does It Call Home?

This plant is a true Caribbean native, naturally occurring in Puerto Rico and the U.S. Virgin Islands. If you’re gardening in these areas, you’re working with a plant that has been thriving in your local ecosystem for generations. That’s always a good sign for successful cultivation!

Why Consider Growing West Indian Milkwort?

Here’s where things get a bit tricky – and honestly, a bit mysterious. West Indian milkwort is one of those plants that seems to fly under the radar in the gardening world. While we know it’s a native perennial forb, detailed information about its specific growing requirements, appearance, and garden performance is surprisingly scarce.

What we can say is that as a native plant, it likely offers these general benefits:

  • Well-adapted to local climate conditions
  • Potentially valuable for supporting local wildlife
  • Lower maintenance once established
  • Authentic addition to native plant gardens

The Reality Check: What We Don’t Know

Here’s where I need to be completely honest with you – there’s a lot we don’t know about West Indian milkwort from a gardening perspective. Information about its specific appearance, size, flowering characteristics, preferred growing conditions, and care requirements is limited in readily available horticultural sources.

This could mean a few things:

  • It might be a rare or uncommon species
  • It may not be widely cultivated in gardens
  • It could be thriving in the wild but hasn’t made the jump to ornamental horticulture

Should You Plant It?

If you’re an adventurous gardener in Puerto Rico or the U.S. Virgin Islands who loves working with native plants, West Indian milkwort could be an interesting addition to your garden – but with some important caveats.

Given the limited information available, I’d recommend:

  • Only sourcing plants or seeds from reputable native plant suppliers
  • Starting small with just one or two plants to see how they perform
  • Connecting with local native plant societies or botanical gardens for more specific guidance
  • Being prepared for some trial and error in finding the right growing conditions

Growing Tips (Based on General Milkwort Knowledge)

While specific care information for Polygala hecatantha is limited, most milkworts generally prefer:

  • Well-draining soil
  • Full sun to partial shade
  • Moderate water once established
  • Minimal fertilization (native plants often prefer lean soils)

The Bottom Line

West Indian milkwort represents one of those intriguing native plants that deserves more attention from the gardening community. While we may not have all the answers about growing it successfully, its status as a Caribbean native makes it potentially valuable for gardeners interested in supporting local ecosystems and preserving native plant heritage.

If you’re feeling adventurous and have access to responsibly sourced plants, it might be worth experimenting with this lesser-known native. Just be sure to do your homework, start small, and connect with local experts who might have hands-on experience with this mysterious milkwort.

West Indian Milkwort

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

Polygalaceae Hoffmanns. & Link - Milkwort family

Genus

Polygala L. - polygala

Species

Polygala hecatantha Urb. - West Indian milkwort

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