North America Non-native Plant

Vigna Lasiocarpa

Botanical name: Vigna lasiocarpa

USDA symbol: VILA13

Native status: Not native but doesn't reproduce and persist in the wild

Synonyms: Dolichos jacquinii DC. (DOJA2)   

Vigna lasiocarpa: A Mysterious Member of the Bean Family If you’ve stumbled upon the name Vigna lasiocarpa in your plant research, you’re probably wondering what exactly this species is and whether it belongs in your garden. You’re not alone in your curiosity – this particular member of the legume family ...

Vigna lasiocarpa: A Mysterious Member of the Bean Family

If you’ve stumbled upon the name Vigna lasiocarpa in your plant research, you’re probably wondering what exactly this species is and whether it belongs in your garden. You’re not alone in your curiosity – this particular member of the legume family is something of an enigma in the gardening world.

What We Know (And Don’t Know) About Vigna lasiocarpa

Vigna lasiocarpa belongs to the same genus as familiar beans like black-eyed peas and mung beans, which gives us some clues about its general characteristics. However, unlike its well-known relatives, this species remains largely mysterious to most gardeners and even many botanists.

You might occasionally see this plant listed under its synonym, Dolichos jacquinii DC., but regardless of the name you encounter, concrete information remains frustratingly scarce.

The Geographic Mystery

One of the biggest question marks surrounding Vigna lasiocarpa is where it naturally occurs. Without knowing its native range, it’s impossible to determine whether this plant would be appropriate for native gardening projects or restoration efforts in any particular region.

Should You Plant Vigna lasiocarpa?

Here’s where we need to pump the brakes a bit. While the mystery surrounding this plant might make it seem intriguing, the lack of available information actually makes it a poor choice for most gardeners. Here’s why:

  • Unknown growth habits could lead to unexpected spreading or invasive behavior
  • Unclear native status means you can’t be sure you’re supporting local ecosystems
  • Unknown growing requirements make successful cultivation unlikely
  • Uncertain hardiness zones could result in plant loss
  • Unknown wildlife and pollinator benefits mean missed opportunities for garden biodiversity

Better Alternatives for Your Garden

Instead of taking a gamble on this mysterious species, consider these well-documented members of the Vigna genus that offer known benefits:

  • Black-eyed peas (Vigna unguiculata) – excellent for southern gardens and nitrogen fixation
  • Cowpeas – drought-tolerant and great for soil improvement
  • Native wild beans specific to your region – check with local native plant societies

The Importance of Plant Information

Vigna lasiocarpa serves as a perfect example of why thorough plant research matters. Before adding any species to your garden, especially lesser-known ones, it’s crucial to understand:

  • Native range and status
  • Growth habits and potential for invasiveness
  • Environmental requirements
  • Wildlife and ecosystem benefits
  • Appropriate growing zones

The Bottom Line

While Vigna lasiocarpa might sound exotic and intriguing, the lack of available information makes it unsuitable for most gardening situations. Without knowing its native status, growth habits, or environmental requirements, planting this species could be problematic for both your garden’s success and local ecosystem health.

Your garden will be much more successful – and environmentally responsible – when you choose well-documented plants with known benefits and clear growing requirements. Save the mystery for your next novel, and stick to plants with proven track records for your landscape!

Vigna Lasiocarpa

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

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Vigna Savi - cowpea

Species

Vigna lasiocarpa (Mart. ex Benth.) Verdc.

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