Native Plants

Drew’s Silky Lupine

Lupinus adsurgens var. undulatus

USDA symbol: LUADU

perennial subshrub

Lower 48 states: native

If you’re looking to add some true California charm to your native garden, Drew’s silky lupine (Lupinus adsurgens var. undulatus) might just be the perfect addition. This lesser-known member of the lupine family brings all the classic beauty of lupines while supporting local ecosystems in ways that non-native plants simply ...

Drew’s Silky Lupine may be listed as rare in your area.
Global Conservation Status

Status: S5T3T4Q | Secure: At low or no risk of extinction in the area due to an extensive range, abundant populations, and with little to no concern of declines or threats.

Drew’s Silky Lupine: A California Native Worth Getting to Know

If you’re looking to add some true California charm to your native garden, Drew’s silky lupine (Lupinus adsurgens var. undulatus) might just be the perfect addition. This lesser-known member of the lupine family brings all the classic beauty of lupines while supporting local ecosystems in ways that non-native plants simply can’t match.

What Makes Drew’s Silky Lupine Special

Drew’s silky lupine is a perennial herbaceous plant that’s as authentic to California as it gets. Unlike some of its more common lupine cousins, this variety has earned its place as a true native, having evolved specifically in California’s unique climate and soil conditions. You might also see it referenced by its former scientific names, Lupinus klamathensis or Lupinus nemoralis, but don’t let the name changes fool you – it’s the same wonderful plant.

Where You’ll Find It Growing Wild

This lupine calls California home, and only California. It’s what botanists call an endemic species, meaning it naturally occurs nowhere else on Earth. You’ll find it thriving in the state’s diverse landscapes, from mountain meadows to foothill regions.

  • Species observed
  • No observations

Why Your Garden (and Local Wildlife) Will Love It

There’s something magical about watching native bees and butterflies discover a plant they’ve co-evolved with for thousands of years. Drew’s silky lupine offers:

  • Stunning purple-blue flower spikes that bloom in late spring to early summer
  • Attractive palmate leaves that add texture even when not in bloom
  • Excellent pollinator support for native bees, butterflies, and other beneficial insects
  • Natural drought tolerance once established
  • Nitrogen-fixing abilities that actually improve your soil

Perfect Garden Settings

Drew’s silky lupine shines brightest in:

  • Native California plant gardens
  • Wildflower meadows and naturalistic plantings
  • Xeriscape and water-wise landscapes
  • Mountain or foothill-themed gardens
  • Pollinator gardens focused on native species

Growing Conditions That Make It Happy

Like most California natives, Drew’s silky lupine appreciates conditions that mimic its natural habitat:

  • Sunlight: Full sun to partial shade
  • Soil: Well-draining soils (clay, sandy, or rocky)
  • Water: Moderate water during establishment, drought-tolerant thereafter
  • Climate: USDA hardiness zones 7-9

Planting and Care Tips

Getting Drew’s silky lupine established is straightforward if you follow a few key guidelines:

  • Best planting time: Fall or early spring
  • Soil preparation: Ensure excellent drainage; amend heavy clay if necessary
  • Watering: Deep, infrequent watering once established
  • Maintenance: Minimal pruning needed; allow seed heads to mature for self-seeding
  • Fertilizing: Generally unnecessary; lupines fix their own nitrogen

A Note About Rarity and Responsible Gardening

Drew’s silky lupine has a somewhat unclear conservation status, which means it’s important to source plants or seeds responsibly. Always purchase from reputable native plant nurseries that propagate their stock rather than wild-collect. This ensures you’re supporting conservation efforts rather than potentially harming wild populations.

Is Drew’s Silky Lupine Right for Your Garden?

If you’re passionate about supporting California’s native ecosystems and want a beautiful, low-maintenance perennial that truly belongs in your landscape, Drew’s silky lupine could be an excellent choice. It’s particularly perfect for gardeners who want to create habitat for native pollinators while enjoying the classic beauty of lupine flowers.

Just remember to source it responsibly and give it the well-draining conditions it craves. With a little care during establishment, you’ll have a stunning native that connects your garden to California’s natural heritage for years to come.

Lupinus adsurgens var. undulatus is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Lupinus adsurgens var. undulatus is also known as:

Lupinus klamathensis | USDA symbol: LUKL
Lupinus nemoralis | USDA symbol: LUNE3

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Rosidae
Order: Fabales
Family: Fabaceae Lindl. - Pea family
Genus: Lupinus L. - lupine

Species: Lupinus adsurgens E. Drew - Drew's silky lupine

Variety: Lupinus adsurgens E. Drew var. undulatus C.P. Sm. - Drew's silky lupine

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