Non-native Plants

Mung Bean

Vigna radiata var. sublobata

USDA symbol: VIRAS

If you’ve stumbled across the name Vigna radiata var. sublobata while researching plants for your garden, you might be scratching your head wondering what exactly this plant is all about. Well, you’re not alone! This particular variety of mung bean is something of an enigma in the gardening world, with ...

Mung Bean Wild Variety: The Mysterious Vigna radiata var. sublobata

If you’ve stumbled across the name Vigna radiata var. sublobata while researching plants for your garden, you might be scratching your head wondering what exactly this plant is all about. Well, you’re not alone! This particular variety of mung bean is something of an enigma in the gardening world, with limited information available compared to its more famous cultivated cousins.

What is Vigna radiata var. sublobata?

Vigna radiata var. sublobata is a wild variety related to the common mung bean that many of us know from Asian cuisine and sprouting. While the regular mung bean (Vigna radiata) is well-documented and widely cultivated, this particular variety remains largely understudied in horticultural literature.

You might also see this plant referenced under its older scientific names, including Phaseolus sublobatus or Phaseolus trinervius, though these synonyms are no longer commonly used in botanical circles.

Geographic Distribution and Native Status

Here’s where things get a bit murky. The specific geographic distribution and native status of Vigna radiata var. sublobata aren’t well-documented in available resources. While the mung bean genus Vigna is known to originate from Asia, pinpointing exactly where this particular variety calls home remains unclear.

Should You Grow It in Your Garden?

This is where we hit a bit of a roadblock. With so little information available about this specific variety’s growing requirements, invasive potential, or garden performance, it’s challenging to make a solid recommendation either way. Here’s what we’re missing:

  • Specific growing conditions and care requirements
  • USDA hardiness zone information
  • Growth habit and mature size
  • Pollinator and wildlife benefits
  • Potential invasive characteristics

Better Alternatives to Consider

Given the lack of comprehensive information about Vigna radiata var. sublobata, you might want to consider some better-documented alternatives for your garden:

  • Native legumes specific to your region that provide similar nitrogen-fixing benefits
  • Well-studied cultivated varieties of mung beans if you’re interested in edible landscaping
  • Other native Vigna species that are better documented for your area

The Bottom Line

While Vigna radiata var. sublobata certainly sounds intriguing, the lack of available growing information makes it a bit of a gamble for home gardeners. Without knowing its specific needs, growth habits, or potential impacts on local ecosystems, it’s hard to recommend diving in headfirst.

If you’re particularly interested in this variety, your best bet would be to connect with botanical gardens, universities, or specialized plant societies that might have more detailed information. They might also be able to guide you toward similar, better-documented plants that could scratch the same gardening itch.

Sometimes the most mysterious plants make for the most interesting conversations, even if they don’t make it into our garden beds!

Vigna radiata var. sublobata is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Vigna radiata var. sublobata is also known as:

Phaseolus sublobatus | USDA symbol: PHSU17
Phaseolus trinervius Wight & | USDA symbol: PHTR8

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Rosidae
Order: Fabales
Family: Fabaceae Lindl. - Pea family
Genus: Vigna Savi - cowpea

Species: Vigna radiata (L.) R. Wilczek - mung bean

Variety: Vigna radiata (L.) R. Wilczek var. sublobata (Roxb.) Verdc. - mung bean

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