North America Native Plant

Purpledisk Helianthella

Botanical name: Helianthella microcephala

USDA symbol: HEMI2

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Encelia microcephala A. Gray (ENMI)   

Purpledisk Helianthella: A Hidden Gem for Southwest Native Gardens If you’re looking to add a splash of sunny color to your native garden while supporting local wildlife, meet the purpledisk helianthella (Helianthella microcephala). This charming perennial wildflower might not be as famous as its sunflower cousins, but it deserves a ...

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 ⚘

Purpledisk Helianthella: A Hidden Gem for Southwest Native Gardens

If you’re looking to add a splash of sunny color to your native garden while supporting local wildlife, meet the purpledisk helianthella (Helianthella microcephala). This charming perennial wildflower might not be as famous as its sunflower cousins, but it deserves a spot in every southwestern native plant enthusiast’s heart—and garden!

What Makes Purpledisk Helianthella Special?

The purpledisk helianthella is a true native treasure of the American Southwest. This delightful forb—that’s garden-speak for a non-woody flowering plant—brings together the best of both worlds: stunning visual appeal and important ecological benefits. With bright yellow petals radiating around distinctive purple-brown centers, these flowers look like nature’s own cheerful emoji scattered across the landscape.

As a perennial, this plant will return year after year, gradually forming lovely clumps that become more impressive with age. Unlike annuals that require replanting each season, purpledisk helianthella rewards patient gardeners with increasing beauty and impact over time.

Where Does It Call Home?

Purpledisk helianthella is native to four southwestern states: Arizona, Colorado, New Mexico, and Utah. This regional specialist has evolved to thrive in the unique conditions of the American Southwest, making it perfectly suited for gardens in these areas.

A Word About Rarity

Here’s something important to know: purpledisk helianthella has a conservation status that suggests it may be uncommon in parts of its range. If you’re drawn to this beautiful native (and we don’t blame you!), please make sure to source your plants or seeds from reputable native plant nurseries that collect responsibly. Never dig plants from the wild—this helps protect natural populations while still allowing you to enjoy this special species in your own garden.

Perfect for Your Native Garden Design

Purpledisk helianthella shines in several garden settings:

  • Wildflower meadows: Scatter it throughout naturalized areas for drifts of sunny color
  • Native plant borders: Use as a mid-height accent among other southwestern natives
  • Xeric gardens: Perfect companion for other drought-tolerant plants
  • Pollinator gardens: A magnet for bees, butterflies, and other beneficial insects

Growing Conditions That Make It Happy

Like many southwestern natives, purpledisk helianthella is refreshingly low-maintenance once you understand its preferences:

  • Sunlight: Full sun is best—at least 6-8 hours of direct sunlight daily
  • Soil: Well-draining soil is crucial; it won’t tolerate soggy conditions
  • Water: Drought-tolerant once established, but appreciates occasional deep watering during extreme dry spells
  • Climate: Thrives in USDA hardiness zones 4-8

Planting and Care Made Simple

Getting started with purpledisk helianthella is easier than you might think:

Planting: Fall is the ideal time for direct seeding, as the seeds benefit from natural winter stratification. If starting with plants, spring planting works well too. Give each plant plenty of space to spread—they’ll form attractive clumps over time.

Ongoing care: This is where purpledisk helianthella really shines as a garden plant. Once established (usually by the second growing season), it requires minimal care. Water deeply but infrequently, and resist the urge to fertilize—rich soils can actually make the plant less resilient and more prone to flopping.

Seasonal maintenance: After the flowers fade and seeds have been enjoyed by birds, you can cut the plants back to encourage fresh growth for the following season.

Wildlife Benefits That Matter

Beyond its obvious beauty, purpledisk helianthella serves as an important food source for native pollinators. Bees love the abundant pollen and nectar, while butterflies appreciate the landing platform provided by the broad flower heads. Later in the season, birds will feast on the nutritious seeds, adding another layer of ecological value to your garden.

Should You Plant Purpledisk Helianthella?

If you live within its native range and want a beautiful, low-maintenance perennial that supports local wildlife, purpledisk helianthella is an excellent choice. Its sunny disposition and ecological benefits make it a worthwhile addition to southwestern native gardens.

Just remember to source your plants responsibly, be patient as it establishes (good things take time!), and enjoy watching this lovely native bring both beauty and biodiversity to your outdoor space. Your local pollinators will thank you, and you’ll have the satisfaction of growing a true regional treasure.

Purpledisk Helianthella

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

Helianthella Torr. & A. Gray - helianthella

Species

Helianthella microcephala (A. Gray) A. Gray - purpledisk helianthella

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