North America Non-native Plant

Dalea Mexiae

Botanical name: Dalea mexiae

USDA symbol: DAME6

Native status: Not native but doesn't reproduce and persist in the wild

Dalea mexiae: A Mysterious Member of the Prairie Clover Family If you’ve stumbled across the name Dalea mexiae in your plant research, you’ve discovered one of botany’s more elusive characters. This member of the legume family is shrouded in mystery, with very little information available even to dedicated plant enthusiasts ...

Dalea mexiae: A Mysterious Member of the Prairie Clover Family

If you’ve stumbled across the name Dalea mexiae in your plant research, you’ve discovered one of botany’s more elusive characters. This member of the legume family is shrouded in mystery, with very little information available even to dedicated plant enthusiasts and researchers.

What We Know About Dalea mexiae

Dalea mexiae belongs to the genus Dalea, commonly known as prairie clovers or indigo bush. The species name mexiae suggests a connection to Mexico, likely honoring botanist Ynes Mexia, a pioneering plant collector who explored Mexico and other parts of the Americas in the early 20th century.

Unfortunately, this is where our concrete knowledge becomes quite thin. Unlike its better-known cousins in the Dalea genus, specific information about D. mexiae’s characteristics, native range, and growing requirements remains scarce in standard botanical and horticultural references.

The Challenge for Gardeners

Here’s where things get interesting – and a bit frustrating – for native plant enthusiasts. The lack of readily available information about Dalea mexiae presents several challenges:

  • Uncertain availability in the nursery trade
  • Unknown growing requirements and hardiness zones
  • Unclear native status and appropriate geographic regions for planting
  • Limited understanding of its ecological role and wildlife benefits

A Word of Caution

Given the limited information available about Dalea mexiae, we strongly recommend extreme caution before attempting to grow this plant. It may be:

  • Extremely rare or endangered
  • Taxonomically uncertain or possibly synonymous with another species
  • Regionally restricted with specific habitat requirements
  • Not readily available through legitimate sources

Better Alternatives: Well-Documented Dalea Species

If you’re drawn to the Dalea genus, consider these well-documented and widely available alternatives:

  • White Prairie Clover (Dalea candida) – A lovely white-flowered species excellent for prairies and wildflower gardens
  • Purple Prairie Clover (Dalea purpurea) – Stunning purple blooms that attract butterflies and other pollinators
  • Silver-leaf Prairie Clover (Dalea argyraea) – Silvery foliage adds textural interest to dry gardens

The Bottom Line

While Dalea mexiae remains an intriguing botanical puzzle, the lack of available information makes it unsuitable for most gardening situations. Until more research clarifies its status, characteristics, and availability, stick with the many other wonderful Dalea species that are well-documented, readily available, and proven performers in native gardens.

If you’re a researcher or have legitimate access to information about this species, we’d love to learn more. The world of native plants is full of discoveries waiting to be made, and Dalea mexiae might just be one of them!

Dalea Mexiae

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

Dalea L. - prairie clover

Species

Dalea mexiae Barneby [excluded]

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