North America Non-native Plant

Blackbrush Wattle

Botanical name: Vachellia anegadensis

USDA symbol: VAAN6

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

Synonyms: Acacia anegadensis Britton [excluded] (ACAN4)   

Blackbrush Wattle: A Critically Rare Caribbean Treasure Meet the blackbrush wattle (Vachellia anegadensis), one of nature’s most elusive treasures. This incredibly rare plant species holds a special place in Caribbean flora, but finding detailed information about it is like searching for a needle in a haystack – and there’s a ...

Rare plant alert!

Region: Conservation status by state

Status: S1: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘

Blackbrush Wattle: A Critically Rare Caribbean Treasure

Meet the blackbrush wattle (Vachellia anegadensis), one of nature’s most elusive treasures. This incredibly rare plant species holds a special place in Caribbean flora, but finding detailed information about it is like searching for a needle in a haystack – and there’s a very important reason why.

What Makes This Plant So Special?

The blackbrush wattle isn’t just rare; it’s critically imperiled. With a Global Conservation Status of S1, this species is hanging on by a thread, typically found in only 5 or fewer locations with very few remaining individuals (fewer than 1,000 plants). This extreme rarity makes it especially vulnerable to disappearing forever.

Previously classified under the genus Acacia (as Acacia anegadensis), this plant has since been reclassified into the Vachellia genus, reflecting our evolving understanding of plant relationships.

Where Does It Call Home?

Based on its scientific name, the blackbrush wattle appears to be associated with the Caribbean region, particularly around Anegada. However, specific geographic distribution details remain largely unknown due to the plant’s extreme rarity.

Should You Plant Blackbrush Wattle?

Here’s where things get serious. While we’d love to give you the green light to add this unique plant to your garden, the reality is quite different. The blackbrush wattle’s critically imperiled status means that:

  • It should only be cultivated with extreme care and responsibility
  • Any plant material must come from verified, ethically sourced suppliers
  • Growing it requires a deep commitment to conservation
  • It’s more suited for botanical gardens or conservation programs than home gardens

The Information Gap

Unfortunately, detailed growing information for blackbrush wattle is virtually nonexistent. We don’t have reliable data on:

  • Specific growing conditions it prefers
  • USDA hardiness zones
  • Planting and care requirements
  • Wildlife and pollinator benefits
  • Mature size and growth habits

This lack of information isn’t surprising given that there are so few plants left in the wild to study.

Conservation Over Cultivation

Rather than focusing on how to grow blackbrush wattle in your backyard, consider supporting conservation efforts for this critically endangered species. If you’re passionate about rare Caribbean plants, look for:

  • Conservation organizations working to protect Caribbean flora
  • Botanical gardens with Caribbean plant programs
  • Seed banks preserving rare species

Alternative Options

If you’re drawn to the idea of growing plants from the Vachellia genus, consider looking into other species that aren’t critically imperiled. Many Acacia and Vachellia species offer beautiful flowers, interesting foliage, and wildlife benefits without the conservation concerns.

The Bottom Line

The blackbrush wattle represents something precious and irreplaceable in our natural world. While it may not be the plant for your home garden, knowing about it and supporting its conservation is something every plant lover can appreciate. Sometimes, the most beautiful thing we can do for a plant is simply ensure it continues to exist in its natural habitat for future generations to discover and protect.

Remember, in the world of native plants, some species are meant to be admired from afar while we work to secure their future in the wild.

Blackbrush Wattle

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

Vachellia Wight & Arn. - acacia

Species

Vachellia anegadensis (Britton) Seigler & Ebinger [excluded] - blackbrush wattle

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