North America Native Plant

Woolly Locoweed

Botanical name: Astragalus mollissimus var. coryi

USDA symbol: ASMOC

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Woolly Locoweed: A Rare Texas Native Worth Protecting If you’re looking for truly unique native plants for your Texas garden, you might have stumbled across woolly locoweed (Astragalus mollissimus var. coryi). But before you start planning where to plant it, there’s something important you need to know about this fascinating ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Woolly Locoweed: A Rare Texas Native Worth Protecting

If you’re looking for truly unique native plants for your Texas garden, you might have stumbled across woolly locoweed (Astragalus mollissimus var. coryi). But before you start planning where to plant it, there’s something important you need to know about this fascinating perennial.

What Makes This Plant Special

Woolly locoweed is a perennial member of the legume family that’s native to the lower 48 states, with its primary home being Texas. As its common name suggests, this plant has a distinctly fuzzy, woolly appearance that sets it apart from other wildflowers in the landscape.

A Rare Find in the Garden World

Here’s where things get interesting – and a bit concerning. Astragalus mollissimus var. coryi has a Global Conservation Status of S5T3, which indicates this variety is considered vulnerable to moderately vulnerable in the wild. This means it’s not exactly common, and finding it in nurseries or seed catalogs is pretty unlikely.

Geographic Distribution

This particular variety calls Texas home, where it has adapted to the specific growing conditions of the Lone Star State. Its limited range makes it even more special for Texas gardeners who want to showcase truly local flora.

Should You Grow Woolly Locoweed?

If you’re determined to grow this rare beauty, proceed with caution and consciousness. Given its vulnerable status, it’s crucial that any plants or seeds you acquire come from responsible, ethical sources that don’t harm wild populations. Never collect from the wild – this could further threaten already vulnerable populations.

The Challenge of Growing Woolly Locoweed

Unfortunately, detailed growing information for this specific variety is quite limited. What we do know is that as a perennial legume, it likely prefers:

  • Well-draining soils typical of Texas landscapes
  • Full sun to partial shade conditions
  • Minimal supplemental watering once established
  • Native soil conditions without heavy amendments

Alternative Approaches

Given the rarity and limited availability of woolly locoweed, you might consider supporting its conservation in other ways:

  • Research local conservation organizations working to protect rare Texas plants
  • Choose other native Astragalus species that are more common and readily available
  • Focus on creating habitat conditions that could support rare plants if they were to be reintroduced
  • Participate in citizen science projects that monitor rare plant populations

The Bottom Line

Woolly locoweed represents the kind of unique, location-specific biodiversity that makes Texas flora so special. While growing it in your garden might be challenging due to its rarity and limited availability, simply learning about it connects you to the incredible diversity of native plants in your region. Sometimes the best way to appreciate a rare plant is to protect its wild habitat and choose more common native alternatives for our home landscapes.

If you do manage to source this plant ethically, treat it as the treasure it is – a living piece of Texas’s botanical heritage that deserves our respect and protection.

Woolly Locoweed

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 mollissimus Torr. - woolly locoweed

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