North America Native Plant

Ashen Milkvetch

Botanical name: Astragalus tephrodes var. remulcus

USDA symbol: ASTER2

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Ashen Milkvetch: A Rare California Native Worth Knowing Meet Astragalus tephrodes var. remulcus, commonly known as ashen milkvetch – a perennial native plant that calls California home. If you’ve never heard of this particular variety, you’re not alone! This is one of those special native plants that flies under the ...

Ashen Milkvetch: A Rare California Native Worth Knowing

Meet Astragalus tephrodes var. remulcus, commonly known as ashen milkvetch – a perennial native plant that calls California home. If you’ve never heard of this particular variety, you’re not alone! This is one of those special native plants that flies under the radar, making it quite the botanical treasure for those in the know.

Where You’ll Find This California Native

Ashen milkvetch is native to the lower 48 states, with its distribution specifically recorded in California. This makes it a true Golden State native, adapted to the unique conditions found within the state’s diverse ecosystems.

The Mystery Behind This Milkvetch

Here’s where things get interesting – and a bit mysterious. Astragalus tephrodes var. remulcus is what we might call a data-shy plant. There’s limited information readily available about this specific variety, which could indicate a few things:

  • It may be quite rare in the wild
  • It might have a very limited natural range
  • The taxonomic status could be under review by botanists
  • It may be a recently recognized variety

Should You Plant Ashen Milkvetch?

This is where we need to pump the brakes a bit. While supporting native plants is always admirable, the limited information about this specific variety raises some important considerations:

Proceed with caution: Given the lack of readily available information about this plant’s growing requirements, wildlife benefits, and conservation status, we’d recommend consulting with local native plant experts, botanical gardens, or California Native Plant Society chapters before attempting to grow it.

Sourcing matters: If this variety is indeed rare, it’s crucial that any plant material be responsibly sourced. Never collect plants from the wild, and ensure any nursery stock comes from ethical propagation programs.

Growing Conditions and Care

Unfortunately, specific growing information for Astragalus tephrodes var. remulcus isn’t widely documented. However, as a member of the Astragalus genus (milkvetches), it likely shares some characteristics with its relatives:

  • Probably prefers well-drained soils
  • Likely drought-tolerant once established
  • May have specific soil or mycorrhizal requirements
  • Could be slow to establish, as many native legumes are

The Bottom Line

Ashen milkvetch represents the fascinating complexity of California’s native flora. While we’d love to give you a complete growing guide, the responsible approach is to acknowledge when information is limited. If you’re interested in this plant, we strongly encourage:

  • Contacting local botanical experts or native plant societies
  • Exploring other well-documented California native milkvetches
  • Supporting botanical research and conservation efforts

Sometimes the most intriguing plants are the ones that remind us there’s still so much to learn about our native flora. Ashen milkvetch might just be one of those special discoveries waiting for the right gardener-scientist to unlock its secrets!

Ashen 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 tephrodes A. Gray - ashen milkvetch

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