North America Non-native Plant

Black Vetch

Botanical name: Vicia nigricans nigricans

USDA symbol: VININ2

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

Black Vetch: A Mystery Plant Worth Understanding If you’ve stumbled across the name Vicia nigricans nigricans, you’ve encountered one of those botanical puzzles that keeps plant enthusiasts scratching their heads. While black vetch is a well-known member of the legume family, this particular subspecies designation is quite elusive in the ...

Black Vetch: A Mystery Plant Worth Understanding

If you’ve stumbled across the name Vicia nigricans nigricans, you’ve encountered one of those botanical puzzles that keeps plant enthusiasts scratching their heads. While black vetch is a well-known member of the legume family, this particular subspecies designation is quite elusive in the gardening world.

What We Know About Black Vetch

The name black vetch typically refers to plants in the Vicia genus that produce dark-colored seeds or have blackish characteristics. Vetches are climbing or trailing legumes that belong to the pea family, known for their ability to fix nitrogen in the soil and support various wildlife species.

The Mystery of This Particular Subspecies

Here’s where things get interesting – and a bit frustrating for curious gardeners. Vicia nigricans nigricans appears to be a subspecies designation that’s either very rare, regionally specific, or possibly outdated in current botanical nomenclature. The lack of readily available information about this specific plant makes it challenging to provide definitive growing advice.

Geographic Distribution

Unfortunately, the specific distribution of Vicia nigricans nigricans is not well-documented in accessible botanical resources. This could indicate a very limited native range or suggest that this taxonomic designation isn’t widely recognized in current botanical literature.

Should You Try to Grow It?

Given the uncertainty surrounding this specific subspecies, here’s my honest gardener-to-gardener advice: proceed with caution and curiosity. If you’ve encountered this plant name through a reputable source or seed supplier, it’s worth investigating further. However, if you’re looking for a reliable black vetch for your garden, you might want to consider better-documented Vicia species.

Alternative Vetch Options

If you’re interested in growing vetches in your garden, consider these better-documented alternatives:

  • Common vetch (Vicia sativa) – widely available and well-suited to various growing conditions
  • Hairy vetch (Vicia villosa) – excellent for cover cropping and nitrogen fixation
  • American vetch (Vicia americana) – a native option in many regions

The Bottom Line

While Vicia nigricans nigricans remains something of a botanical mystery, this doesn’t diminish the value of vetches in general. These plants are fantastic for supporting pollinators, fixing nitrogen, and adding texture to naturalized garden areas. If you’re specifically seeking this subspecies, I’d recommend connecting with botanical gardens, native plant societies, or specialized seed companies who might have more detailed information.

Remember, sometimes the most interesting gardening adventures begin with the plants that make us ask more questions than they answer!

Black Vetch

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

Vicia L. - vetch

Species

Vicia nigricans Hook. & Arn. - black vetch

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