North America Native Plant

Chihuahuan Stickseed

Botanical name: Hackelia ursina var. diaboli

USDA symbol: HAURD

Life cycle: biennial

Habit: forb

Native status: Native to the lower 48 states  

Chihuahuan Stickseed: A Rare Arizona Native Worth Protecting If you’re passionate about native plants and conservation, you might want to learn about Chihuahuan stickseed (Hackelia ursina var. diaboli), a fascinating and rare herbaceous plant that calls Arizona home. This little-known native species represents both an opportunity and a responsibility for ...

Rare plant alert!

Region: Conservation status by state

Status: S3?T1T3: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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) ⚘ 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 ⚘ Subspecies or variety is 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. ⚘

Chihuahuan Stickseed: A Rare Arizona Native Worth Protecting

If you’re passionate about native plants and conservation, you might want to learn about Chihuahuan stickseed (Hackelia ursina var. diaboli), a fascinating and rare herbaceous plant that calls Arizona home. This little-known native species represents both an opportunity and a responsibility for dedicated native plant gardeners.

What Makes Chihuahuan Stickseed Special?

Chihuahuan stickseed is a forb—basically a soft-stemmed plant without woody growth above ground. Unlike shrubs or trees, this perennial (and sometimes biennial) plant dies back to ground level each year, with its growing points safely tucked at or below the soil surface. Think of it as nature’s way of playing it safe in challenging environments.

What really sets this plant apart is its rarity. With a conservation status that suggests it’s uncommon to rare, Chihuahuan stickseed is one of those plants that makes you feel like you’ve discovered a botanical treasure.

Where Does It Call Home?

This native beauty is found exclusively in Arizona, making it a true regional specialty. As its common name suggests, it’s connected to the Chihuahuan Desert region, where it has evolved to thrive in the unique conditions of the American Southwest.

Should You Grow Chihuahuan Stickseed?

Here’s where things get interesting—and important. Because of its rarity status, this isn’t a plant you should casually add to your shopping cart. If you’re determined to grow Chihuahuan stickseed, you absolutely must source it responsibly. This means:

  • Only purchasing from reputable native plant nurseries that propagate their own stock
  • Never collecting from wild populations
  • Verifying that any seeds or plants come from ethical sources
  • Considering it more of a conservation effort than a typical gardening project

Growing Conditions and Care

While specific growing information for this variety is limited, we can make some educated guesses based on its Arizona native status and desert connections. Like many desert natives, it likely prefers:

  • Well-draining soil (desert plants hate wet feet)
  • Minimal supplemental watering once established
  • Full sun to partial shade conditions
  • Rocky or sandy soil types typical of its native habitat

As a forb, it won’t grow into a large specimen—expect a relatively modest, herbaceous plant that fits well into naturalistic plantings or specialized native plant gardens.

The Conservation Angle

Growing Chihuahuan stickseed is less about typical gardening and more about participating in conservation. If you do choose to grow this rare native, you’re essentially becoming a steward of Arizona’s botanical heritage. Consider sharing seeds (responsibly) with other native plant enthusiasts and documenting your growing experiences to contribute to our knowledge of this uncommon species.

Alternative Choices

If you love the idea of growing Arizona natives but want something more readily available, consider other regional forbs and wildflowers that won’t raise conservation concerns. Your local native plant society can recommend beautiful, appropriate alternatives that will give you the satisfaction of supporting native ecosystems without the ethical complications.

The Bottom Line

Chihuahuan stickseed represents the fascinating complexity of native plant gardening—sometimes the most interesting plants are also the most challenging to grow responsibly. If you’re up for the challenge and committed to ethical sourcing, this rare Arizona native could be a meaningful addition to a conservation-focused garden. Just remember: with rare plants comes great responsibility!

Chihuahuan Stickseed

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Lamiales

Family

Boraginaceae Juss. - Borage family

Genus

Hackelia Opiz - stickseed

Species

Hackelia ursina (Greene ex A. Gray) I.M. Johnst. - Chihuahuan stickseed

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