North America Native Plant

Tidestrom’s Milkvetch

Botanical name: Astragalus tidestromii

USDA symbol: ASTI

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Tidestrom’s Milkvetch: A Hidden Gem for Desert Gardens Meet Tidestrom’s milkvetch (Astragalus tidestromii), a charming little perennial that’s perfectly suited for gardeners looking to embrace water-wise landscaping with authentic native flair. This unassuming desert dweller might not win any flashiness contests, but it brings something special to the table: genuine ...

Tidestrom’s Milkvetch: A Hidden Gem for Desert Gardens

Meet Tidestrom’s milkvetch (Astragalus tidestromii), a charming little perennial that’s perfectly suited for gardeners looking to embrace water-wise landscaping with authentic native flair. This unassuming desert dweller might not win any flashiness contests, but it brings something special to the table: genuine regional character and remarkable drought tolerance.

Where You’ll Find This Desert Native

Tidestrom’s milkvetch calls the southwestern United States home, naturally occurring in California and Nevada’s desert regions. As a true native of the lower 48 states, this perennial has spent centuries perfecting the art of thriving in challenging desert conditions.

What Makes It Garden-Worthy

While Tidestrom’s milkvetch may appear modest at first glance, it offers several compelling reasons to earn a spot in your landscape:

  • Authentic regional native that supports local ecosystems
  • Exceptional drought tolerance once established
  • Delicate purple to pink pea-like flowers that attract native pollinators
  • Low-maintenance perennial that returns year after year
  • Perfect for water-conscious gardening approaches

The Perfect Garden Match

This desert native shines brightest in specific garden settings. Consider Tidestrom’s milkvetch for:

  • Native plant gardens celebrating regional flora
  • Xeriscaping and drought-tolerant landscapes
  • Rock gardens and naturalized desert areas
  • Pollinator gardens focused on native species
  • Low-water maintenance landscapes

Growing Tidestrom’s Milkvetch Successfully

The key to success with this desert native lies in mimicking its natural habitat. Think sandy, well-draining conditions and plenty of sunshine.

Ideal Growing Conditions

  • Full sun exposure
  • Well-draining sandy or gravelly soil
  • USDA hardiness zones 8-10
  • Minimal water requirements once established

Planting and Care Tips

Plant your Tidestrom’s milkvetch in fall or early spring when temperatures are moderate. The most crucial aspect of care is avoiding overwatering – this desert native actually prefers lean, dry conditions. Once established, it requires minimal intervention, making it an excellent choice for low-maintenance landscapes.

Water sparingly during the establishment period, then reduce watering significantly. This plant has evolved to handle long dry periods and will struggle in consistently moist conditions.

Supporting Native Pollinators

The small, pea-like flowers of Tidestrom’s milkvetch may seem unremarkable, but they’re perfectly designed to attract native bees and other small pollinators. By including this native species in your garden, you’re providing authentic food sources that local pollinator populations have relied on for generations.

Is Tidestrom’s Milkvetch Right for Your Garden?

This native perennial works best for gardeners who appreciate subtle beauty and want to create authentic desert landscapes. If you’re looking for bold, showy displays, this might not be your plant. However, if you value water conservation, native plant gardening, and supporting local ecosystems, Tidestrom’s milkvetch could be exactly what your landscape needs.

Consider this charming desert native when you want to add authentic regional character to your garden while keeping maintenance requirements refreshingly low.

Tidestrom’s 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 tidestromii (Rydb.) Clokey - Tidestrom's milkvetch

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