North America Non-native Plant

Astragalus Suprapilosus

Botanical name: Astragalus suprapilosus

USDA symbol: ASSU30

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

Astragalus suprapilosus: A Mystery Plant in the Milkvetch Family If you’ve stumbled across the name Astragalus suprapilosus in your gardening research, you’re not alone in wondering what exactly this plant is. This particular species name presents quite the botanical puzzle, as it doesn’t appear in major plant databases or scientific ...

Astragalus suprapilosus: A Mystery Plant in the Milkvetch Family

If you’ve stumbled across the name Astragalus suprapilosus in your gardening research, you’re not alone in wondering what exactly this plant is. This particular species name presents quite the botanical puzzle, as it doesn’t appear in major plant databases or scientific literature that typically catalog the extensive Astragalus genus.

The Astragalus Family Context

The genus Astragalus is a massive group containing over 3,000 species worldwide, commonly known as milkvetches or locoweeds. These plants are typically members of the legume family (Fabaceae) and are known for their distinctive pea-like flowers and often complex growing requirements. However, Astragalus suprapilosus specifically remains elusive in botanical records.

The Challenge with This Species

Here’s where things get interesting (and a bit frustrating for plant enthusiasts): despite extensive searching through botanical databases, herbarium records, and scientific literature, verified information about Astragalus suprapilosus is simply not available. This could mean several things:

  • It may be an extremely rare or recently described species with limited documentation
  • The name might be a synonym or outdated classification
  • There could be a spelling variation or taxonomic confusion
  • It might be a regional or colloquial name not widely recognized

What This Means for Gardeners

If you’re considering growing what you believe to be Astragalus suprapilosus, here’s our honest recommendation: proceed with extreme caution. Without verified information about this plant’s native status, growing requirements, or potential invasiveness, it’s impossible to provide responsible growing advice.

Instead, we’d suggest exploring well-documented native Astragalus species that are appropriate for your region. Many milkvetches are excellent native plants that support pollinators and wildlife, but they require specific growing conditions and careful consideration of their role in local ecosystems.

Better Alternatives to Consider

If you’re drawn to the Astragalus genus, consider these well-documented native options instead:

  • Work with your local native plant society to identify Astragalus species native to your area
  • Consult regional botanists or herbarium specialists who might have knowledge of local Astragalus varieties
  • Explore other native legumes that provide similar ecological benefits

Moving Forward Responsibly

The world of native plants is vast and sometimes confusing, with new species discoveries, taxonomic changes, and regional variations constantly evolving our understanding. When encountering unfamiliar plant names like Astragalus suprapilosus, the best approach is to:

  • Verify the plant’s identity through multiple reliable sources
  • Confirm its native status in your region
  • Understand its growing requirements and potential impacts
  • Source plants only from reputable native plant nurseries

While we’d love to give you the complete growing guide for Astragalus suprapilosus, responsible gardening means acknowledging when we simply don’t have enough reliable information. Your local extension office, native plant society, or regional botanist might be your best resources for solving this particular plant mystery!

Astragalus Suprapilosus

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

Astragalus L. - milkvetch

Species

Astragalus suprapilosus Gontsch.

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