North America Native Plant

Guadalupe Mountain Necklacepod

Botanical name: Sophora gypsophila var. guadalupensis

USDA symbol: SOGYG

Life cycle: perennial

Habit: shrub

Native status: Native to the lower 48 states  

Guadalupe Mountain Necklacepod: A Rare Desert Gem Worth Protecting Meet the Guadalupe Mountain necklacepod (Sophora gypsophila var. guadalupensis), one of the Southwest’s most elusive native shrubs. This perennial beauty might not be showing up at your local nursery anytime soon, but it deserves a spot in our conversation about native ...

Rare plant alert!

Region: Conservation status by state

Status: S1T1: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘

Guadalupe Mountain Necklacepod: A Rare Desert Gem Worth Protecting

Meet the Guadalupe Mountain necklacepod (Sophora gypsophila var. guadalupensis), one of the Southwest’s most elusive native shrubs. This perennial beauty might not be showing up at your local nursery anytime soon, but it deserves a spot in our conversation about native plant conservation and specialized desert gardening.

What Makes This Plant Special?

The Guadalupe Mountain necklacepod is a multi-stemmed woody shrub that typically grows 4-5 meters tall (that’s about 13-16 feet for those of us still thinking in feet). Like other members of the pea family, it produces charming yellow flowers that eventually develop into distinctive seed pods – hence the necklacepod part of its common name.

This isn’t your average backyard shrub, though. It’s a true specialist, evolved to thrive in very specific conditions that most plants would find downright hostile.

Where Does It Call Home?

The Guadalupe Mountain necklacepod has one of the most limited native ranges you’ll encounter. It grows exclusively in New Mexico and Texas, specifically in the unique gypsum soils of the Guadalupe Mountains region. We’re talking about a plant that’s essentially found nowhere else on Earth naturally.

The Reality Check: Rarity Status

Important note for gardeners: This plant carries a Global Conservation Status of S1T1, which means it’s extremely rare and vulnerable. Before you get excited about adding this unique species to your garden, understand that this is a plant that needs our protection more than our cultivation.

If you’re determined to grow Guadalupe Mountain necklacepod, only source it from reputable native plant nurseries that can guarantee responsibly collected or propagated material. Never collect from wild populations.

Growing Conditions: Not for the Faint of Heart

Here’s where things get interesting (and challenging). The Guadalupe Mountain necklacepod has evolved to love what most plants hate:

  • Gypsum-rich, highly alkaline soils
  • Excellent drainage (think desert-level drainage)
  • Full sun exposure
  • Very low water requirements once established
  • USDA hardiness zones 7-9

The soil requirement is the real kicker here. This plant doesn’t just prefer gypsum soils – it essentially requires them. Without that specific mineral composition, you’re likely to struggle with cultivation.

Garden Role and Design Potential

If you can provide the right conditions, the Guadalupe Mountain necklacepod could serve as:

  • A conversation starter in specialized xerophytic gardens
  • A focal point in native plant conservation collections
  • An educational specimen for desert plant enthusiasts
  • A pollinator magnet (bees love those yellow flowers!)

The Bottom Line for Gardeners

Should you grow Guadalupe Mountain necklacepod? The answer depends on your goals, location, and commitment level. This isn’t a plant for casual gardeners or those looking for easy-care natives. It’s for serious native plant enthusiasts who can provide specialized conditions and want to participate in conservation efforts.

If you’re in Texas or New Mexico and have access to appropriate soil conditions, growing this rare beauty could contribute to its preservation. Just remember to source responsibly and consider it a long-term commitment to conservation rather than just another garden addition.

For most gardeners seeking drought-tolerant native shrubs, consider more readily available alternatives like desert willow, cenizo, or other regional Sophora species that can provide similar aesthetic appeal without the cultivation challenges and conservation concerns.

A Plant Worth Protecting

Whether or not the Guadalupe Mountain necklacepod ends up in your garden, it represents something important: the incredible diversity and specialization of our native flora. Sometimes the best way to love a plant is to appreciate it in its natural habitat and support conservation efforts that protect these unique desert ecosystems for future generations.

Guadalupe Mountain Necklacepod

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

Sophora L. - necklacepod

Species

Sophora gypsophila B.L. Turner & A. Powell - Guadalupe Mountain necklacepod

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