North America Native Plant

Little Lemonhead

Botanical name: Coreocarpus arizonicus

USDA symbol: COAR5

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Little Lemonhead: A Rare Arizona Native Worth Knowing About If you’ve stumbled across the name little lemonhead in your native plant research, you’ve discovered one of the more elusive members of Arizona’s flora. This charming common name belongs to Coreocarpus arizonicus, a perennial forb that calls the Grand Canyon State ...

Rare plant alert!

Region: Conservation status by state

Status: S3S4: 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 ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

Little Lemonhead: A Rare Arizona Native Worth Knowing About

If you’ve stumbled across the name little lemonhead in your native plant research, you’ve discovered one of the more elusive members of Arizona’s flora. This charming common name belongs to Coreocarpus arizonicus, a perennial forb that calls the Grand Canyon State home.

What Makes Little Lemonhead Special

Little lemonhead is a native perennial herb that grows as a forb—meaning it’s a non-woody vascular plant that lacks the thick, woody stems you’d find on shrubs or trees. Like many forbs, it likely dies back to ground level each year, with its perennating buds safely tucked at or below the soil surface, ready to emerge when conditions are right.

Where You’ll Find This Arizona Native

This plant is exclusively native to Arizona, making it a true regional specialty. As a native species of the lower 48 states, little lemonhead has adapted specifically to the unique conditions found within Arizona’s diverse landscapes.

A Word of Caution: Rarity Matters

Here’s where things get important for responsible gardeners. Little lemonhead carries a Global Conservation Status of S3S4, which indicates this plant has some level of conservation concern. This rarity status means we need to be extra thoughtful about how we approach growing this species.

If you’re considering adding little lemonhead to your garden, please keep these guidelines in mind:

  • Only source plants from reputable native plant nurseries that use ethical collection practices
  • Never collect seeds or plants from wild populations
  • Consider whether your garden can truly replicate the plant’s natural habitat needs
  • Verify plant identification with local botanical experts before purchasing

The Challenge of Growing Little Lemonhead

Unfortunately, detailed growing information for Coreocarpus arizonicus is quite limited, which reflects just how rare and specialized this plant truly is. This lack of readily available cultivation information suggests that little lemonhead may be:

  • Extremely habitat-specific in its requirements
  • Challenging to grow outside its natural range
  • Better left to conservation efforts and specialized botanical gardens

Alternative Approaches for Arizona Gardeners

Given the rarity and limited growing information for little lemonhead, Arizona gardeners passionate about native plants might consider focusing on other native Arizona forbs that are:

  • More readily available from nurseries
  • Better documented for home cultivation
  • Less conservation-sensitive

Your local native plant society or extension office can provide excellent recommendations for Arizona native perennials that will thrive in home gardens while supporting local wildlife.

Supporting Conservation

Sometimes the best way to appreciate a rare native plant like little lemonhead is to support its conservation in the wild rather than attempting to grow it at home. Consider:

  • Donating to organizations working on Arizona native plant conservation
  • Participating in native plant society activities
  • Learning more about Arizona’s unique flora through guided botanical walks
  • Advocating for habitat protection in your community

While little lemonhead remains something of a botanical mystery, its very existence reminds us of the incredible diversity and specialization found in Arizona’s native plant communities. Sometimes the most responsible approach is simply knowing these rare treasures exist and working to protect the wild spaces where they continue to thrive.

Little Lemonhead

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

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Coreocarpus Benth. - coreocarpus

Species

Coreocarpus arizonicus (A. Gray) S.F. Blake - little lemonhead

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