North America Native Plant

Hinckley’s Spreadwing

Botanical name: Eurytaenia hinckleyi

USDA symbol: EUHI2

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Hinckley’s Spreadwing: A Rare Native Gem for Southwestern Gardens Meet Hinckley’s spreadwing (Eurytaenia hinckleyi), a delicate annual wildflower that’s truly a hidden treasure of the American Southwest. This unassuming member of the carrot family might not be the showiest plant in your garden, but it packs a punch when it ...

Rare plant alert!

Region: Conservation status by state

Status: S3: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Hinckley’s Spreadwing: A Rare Native Gem for Southwestern Gardens

Meet Hinckley’s spreadwing (Eurytaenia hinckleyi), a delicate annual wildflower that’s truly a hidden treasure of the American Southwest. This unassuming member of the carrot family might not be the showiest plant in your garden, but it packs a punch when it comes to supporting native ecosystems and adding authentic regional character to your landscape.

Where You’ll Find This Native Beauty

Hinckley’s spreadwing is a true Southwestern native, calling New Mexico and Texas home. This plant has evolved specifically to thrive in the unique conditions of this region, making it perfectly adapted to local climate patterns, soil types, and wildlife needs. As a native species to the lower 48 states, it represents an authentic piece of American botanical heritage.

Why This Plant Deserves Your Attention (And Caution)

Here’s where things get important: Hinckley’s spreadwing has a Global Conservation Status of S3, meaning it’s considered vulnerable. With typically only 21 to 100 occurrences and between 3,000 to 10,000 individuals remaining, this species needs our help. If you’re considering adding it to your garden, you’re not just growing a plant – you’re participating in conservation.

Important note: If you decide to grow Hinckley’s spreadwing, please ensure you source seeds or plants only from reputable native plant nurseries that practice responsible collection methods. Never collect from wild populations.

What to Expect in Your Garden

Hinckley’s spreadwing is an annual forb, which means it completes its entire life cycle in one year and lacks woody stems. Think of it as nature’s way of creating a delicate, herbaceous wildflower that starts fresh each growing season. The plant produces small white flowers arranged in umbels – those characteristic umbrella-like clusters that are signature features of the carrot family.

While we don’t have specific height and width measurements readily available, most plants in this family tend to be modest in size, making them perfect for tucking into naturalized areas or native plant borders.

Perfect Garden Settings

This specialized native thrives in:

  • Native plant gardens focused on Southwestern species
  • Xerophytic or drought-tolerant landscapes
  • Naturalized wildflower meadows
  • Conservation gardens supporting rare species
  • Educational gardens showcasing regional biodiversity

Growing Conditions and Care

While specific growing requirements aren’t well-documented, we can make educated assumptions based on its native habitat in New Mexico and Texas. Hinckley’s spreadwing likely prefers:

  • Well-draining soils (typical for arid-adapted plants)
  • Full sun to partial shade
  • Minimal water once established
  • USDA hardiness zones 7-9 (based on its native range)

Supporting Pollinators and Wildlife

Those delicate umbel flowers aren’t just pretty – they’re pollinator magnets! Small native bees, beneficial insects, and other tiny pollinators are drawn to these accessible flower clusters. By growing Hinckley’s spreadwing, you’re providing crucial habitat and food sources for native wildlife that have co-evolved with this plant over thousands of years.

Planting and Care Tips

As an annual, Hinckley’s spreadwing will need to be grown from seed each year. Here’s how to give it the best start:

  • Sow seeds in fall or early spring when temperatures are moderate
  • Scatter seeds in prepared soil and lightly cover
  • Water gently until germination, then reduce watering
  • Allow plants to self-seed for natural succession
  • Avoid over-fertilizing – native plants often prefer lean soils

The Bottom Line

Should you grow Hinckley’s spreadwing? If you live in its native range and are passionate about supporting rare native species, absolutely – but do so responsibly. This isn’t a plant for every gardener or every garden, but for those committed to conservation and authentic native landscaping, it offers a meaningful way to participate in preserving American botanical heritage.

Just remember: with great plants comes great responsibility. Source ethically, grow mindfully, and you’ll be doing your part to ensure future generations can enjoy this vulnerable southwestern gem.

Hinckley’s Spreadwing

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

Apiales

Family

Apiaceae Lindl. - Carrot family

Genus

Eurytaenia Torr. & A. Gray - spreadwing

Species

Eurytaenia hinckleyi Mathias & Constance - Hinckley's spreadwing

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