North America Native Plant

Grass-like Mock Goldenweed

Botanical name: Stenotus armerioides var. gramineus

USDA symbol: STARG

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Haplopappus armerioides (Nutt.) A. Gray var. gramineus S.L. Welsh & F.J. Sm. (HAARG)   

Grass-Like Mock Goldenweed: A Rare Utah Native Worth Knowing If you’re a native plant enthusiast looking for something truly special, let me introduce you to grass-like mock goldenweed (Stenotus armerioides var. gramineus). This charming little perennial is one of Utah’s hidden botanical gems, though you won’t find it in your ...

Rare plant alert!

Region: Conservation status by state

Status: S4S5T2T3: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is 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) ⚘ 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. ⚘ 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 ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Grass-Like Mock Goldenweed: A Rare Utah Native Worth Knowing

If you’re a native plant enthusiast looking for something truly special, let me introduce you to grass-like mock goldenweed (Stenotus armerioides var. gramineus). This charming little perennial is one of Utah’s hidden botanical gems, though you won’t find it in your typical garden center – and there’s a very good reason for that.

What Makes This Plant Special

Grass-like mock goldenweed is a perennial forb herb, meaning it’s a non-woody plant that comes back year after year. Don’t let the grass-like name fool you – this beauty produces lovely yellow composite flowers that are characteristic of the sunflower family (Asteraceae). The grass-like part refers to its foliage, which has a slender, linear appearance that sets it apart from its showier cousins.

Where You’ll Find It (Or Won’t)

Here’s where things get interesting – and a bit concerning. This variety of mock goldenweed is found exclusively in Utah, making it what botanists call an endemic species. It’s essentially Utah’s own special plant that exists nowhere else on Earth.

The Rarity Factor: Why You Should Care

Before you start planning where to plant this beauty, there’s something important you need to know. Grass-like mock goldenweed has a Global Conservation Status of S4S5T2T3, which indicates this particular variety faces some conservation concerns. In plain English, this means it’s not exactly common in the wild.

If you’re determined to grow this Utah native, please – and I can’t stress this enough – only source it from reputable native plant nurseries that propagate their plants responsibly. Never collect from wild populations.

Growing Grass-Like Mock Goldenweed

While specific growing information for this variety is limited, we can make some educated guesses based on its Utah mountain habitat and its relatives in the Stenotus genus:

  • Sunlight: Likely prefers full sun conditions
  • Soil: Well-draining soils are probably essential
  • Water: Once established, it should be quite drought tolerant
  • Climate: Estimated to be hardy in USDA zones 4-7

Where It Fits in Your Garden

This isn’t your typical border plant or foundation planting. Grass-like mock goldenweed would be perfect for:

  • Rock gardens that showcase alpine and mountain plants
  • Native plant collections focused on Utah species
  • Xeriscaping projects that emphasize water-wise gardening
  • Educational gardens that tell the story of local ecosystems

Benefits for Wildlife

Like most members of the sunflower family, this plant likely provides nectar and pollen for native bees and other small pollinators. Every native plant we can responsibly add to our gardens helps support local wildlife populations.

The Bottom Line

Grass-like mock goldenweed represents something special in the native plant world – a true Utah original that deserves our respect and protection. While it might not be the easiest plant to find or grow, it offers gardeners a chance to participate in conservation while creating unique, water-wise landscapes.

If you do decide to grow this rare beauty, remember that you’re becoming a steward of Utah’s natural heritage. Source responsibly, grow with care, and maybe even save some seeds to share with other conservation-minded gardeners. After all, the best way to protect rare plants is sometimes to grow them – responsibly, of course.

Also known by its scientific name Stenotus armerioides var. gramineus, this plant may also be listed under the synonym Haplopappus armerioides var. gramineus in older references.

Grass-like Mock Goldenweed

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

Stenotus Nutt. - mock goldenweed

Species

Stenotus armerioides Nutt. - thrift mock goldenweed

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