North America Native Plant

Laramie Chickensage

Botanical name: Sphaeromeria simplex

USDA symbol: SPSI3

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Tanacetum simplex A. Nelson (TASI)   

Laramie Chickensage: A Rare Wyoming Treasure Worth Protecting Meet one of Wyoming’s most elusive native plants: Laramie chickensage (Sphaeromeria simplex). This little-known perennial forb might not be a household name, but for native plant enthusiasts and conservation-minded gardeners, it represents something truly special – a rare piece of the American ...

Rare plant alert!

Region: Conservation status by state

Status: S2: Status is uncertain but is somewhere between the following rankings: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘

Laramie Chickensage: A Rare Wyoming Treasure Worth Protecting

Meet one of Wyoming’s most elusive native plants: Laramie chickensage (Sphaeromeria simplex). This little-known perennial forb might not be a household name, but for native plant enthusiasts and conservation-minded gardeners, it represents something truly special – a rare piece of the American West that deserves our attention and protection.

What Makes Laramie Chickensage Special?

Laramie chickensage is a perennial forb, meaning it’s a non-woody plant that returns year after year. As part of the sunflower family, it produces small clusters of tiny yellow flowers that may seem modest at first glance, but pack a punch when it comes to supporting local ecosystems. The plant’s silvery-green foliage releases a pleasant, sage-like aroma when brushed or crushed, adding a sensory dimension to any garden.

Where Does It Call Home?

This Wyoming native is quite the homebody – it’s found exclusively in the Cowboy State, making it a true endemic species. Its natural range is centered around the Laramie Basin in southeastern Wyoming, where it has adapted to the unique conditions of high-elevation grasslands and prairie margins.

A Plant That Needs Our Help

Important Conservation Note: Laramie chickensage carries a Global Conservation Status of S2, meaning it’s considered Imperiled. With typically only 6 to 20 known occurrences and fewer than 3,000 individuals remaining in the wild, this plant is extremely vulnerable to extinction. If you’re interested in growing this species, it’s crucial to source it only from reputable nurseries that propagate plants responsibly – never collect from wild populations.

Garden Appeal and Landscape Role

While Laramie chickensage may not be the showiest plant in your garden, it offers unique value for:

  • Native plant collections and botanical gardens
  • Rock gardens and alpine plant displays
  • Xeriscaping and water-wise landscaping
  • Conservation gardens focused on rare species
  • Educational landscapes highlighting regional flora

Its compact growth habit and drought tolerance make it an excellent choice for challenging spots where other plants might struggle.

Pollinator and Wildlife Benefits

Though small, the yellow flower clusters of Laramie chickensage likely provide nectar and pollen for native bees, beneficial wasps, and other small pollinators. As with many members of the sunflower family, it probably supports a variety of specialist insects that have co-evolved with native Wyoming flora.

Growing Conditions and Care

If you’re fortunate enough to obtain ethically sourced Laramie chickensage, here’s what it needs to thrive:

Climate: Hardy in USDA zones 4-6, this plant is adapted to Wyoming’s harsh winters and dry summers.

Soil Requirements:

  • Excellent drainage is absolutely critical
  • Tolerates alkaline soils typical of Wyoming
  • Prefers lean, rocky, or sandy soils over rich garden soil
  • Avoid clay or water-retentive soils

Light and Water:

  • Full sun exposure
  • Minimal water once established
  • Extremely drought tolerant
  • Overwatering is often fatal

Planting and Care Tips

Success with Laramie chickensage requires mimicking its native high-elevation prairie conditions:

  • Plant in spring after the last frost
  • Amend heavy soils with coarse sand or gravel for drainage
  • Water sparingly during establishment, then rely on natural precipitation
  • Avoid fertilizing – this plant prefers nutrient-poor conditions
  • Provide good air circulation to prevent moisture-related issues
  • Mulch with gravel rather than organic mulches

Should You Grow Laramie Chickensage?

The answer depends on your gardening goals and commitment to conservation. This isn’t a plant for casual gardeners – it requires specific conditions and responsible sourcing. However, if you’re passionate about:

  • Supporting plant conservation efforts
  • Growing authentic regional natives
  • Creating specialized rock or alpine gardens
  • Contributing to seed banking and preservation efforts

Then Laramie chickensage could be a meaningful addition to your landscape. Just remember: only source from reputable growers who propagate plants ethically, and consider participating in citizen science or conservation efforts to help protect this rare species in the wild.

By choosing to grow rare natives like Laramie chickensage, we become stewards of America’s botanical heritage – one garden at a time.

Laramie Chickensage

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

Sphaeromeria Nutt. - chickensage

Species

Sphaeromeria simplex (A. Nelson) A. Heller - Laramie chickensage

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