North America Native Plant

Freckled Milkvetch

Botanical name: Astragalus lentiginosus var. antonius

USDA symbol: ASLEA3

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Freckled Milkvetch (Astragalus lentiginosus var. antonius): A Rare California Native Worth Protecting Meet one of California’s more elusive native plants: the freckled milkvetch variety antonius. While the common freckled milkvetch might be familiar to some native plant enthusiasts, this particular variety is a rare gem that deserves special attention from ...

Rare plant alert!

Region: Conservation status by state

Status: S5T2: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ 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. ⚘

Freckled Milkvetch (Astragalus lentiginosus var. antonius): A Rare California Native Worth Protecting

Meet one of California’s more elusive native plants: the freckled milkvetch variety antonius. While the common freckled milkvetch might be familiar to some native plant enthusiasts, this particular variety is a rare gem that deserves special attention from conservation-minded gardeners.

What Makes This Plant Special

Astragalus lentiginosus var. antonius is a perennial member of the legume family, native to California. As its common name suggests, the freckled milkvetch gets its charming moniker from the spotted or freckled appearance of its flowers or foliage. This particular variety represents a unique genetic lineage that has adapted to specific conditions within California’s diverse landscapes.

Where You’ll Find It (Or Won’t)

This rare variety calls California home, though its exact distribution within the state appears to be quite limited. Like many specialized plant varieties, it has likely evolved to thrive in very specific microclimates and soil conditions.

A Word of Caution: Rarity Status

Here’s where things get serious, fellow plant lovers. This variety carries a Global Conservation Status of S5T2, which indicates that while the main species may be secure, this particular variety is considered imperiled. In plain terms, this means var. antonius is at risk and quite rare in the wild.

What this means for gardeners: If you’re considering adding this plant to your garden, please ensure any plant material comes from reputable, ethical sources that practice responsible propagation. Never collect plants from wild populations, as this could further threaten this already vulnerable variety.

Growing Considerations

Unfortunately, specific growing information for this particular variety is limited, which isn’t uncommon for rare plant varieties. However, as a California native perennial, it would likely appreciate:

  • Well-draining soils typical of many California natives
  • Minimal summer watering once established
  • Protection from harsh conditions while getting established

Should You Grow It?

While we’d love to encourage everyone to grow rare natives, this particular variety requires a thoughtful approach. If you’re interested in freckled milkvetch, consider:

  • Contacting local native plant societies for guidance on ethical sourcing
  • Exploring other Astragalus species that may be more readily available
  • Supporting conservation efforts for rare California plants
  • Growing the more common varieties of freckled milkvetch instead

The Bottom Line

Astragalus lentiginosus var. antonius represents the fascinating diversity hidden within California’s native flora. While its rarity makes it a challenging choice for the average home gardener, it serves as an important reminder of why we need to protect and preserve our native plant heritage. Sometimes the best way to love a plant is to admire it from afar while supporting its conservation in the wild.

If you’re passionate about rare natives and have experience with responsible propagation, this variety might be worth pursuing through proper channels. For most gardeners, though, exploring the wonderful world of more common California natives will provide plenty of beauty while supporting local ecosystems.

Freckled Milkvetch

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 lentiginosus Douglas ex Hook. - freckled milkvetch

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