North America Native Plant

Maguire’s Primrose

Botanical name: Primula cusickiana var. maguirei

USDA symbol: PRCUM

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Primula maguirei L.O. Williams (PRMA7)   

Maguire’s Primrose: A Rare Alpine Gem Worth Protecting Meet Maguire’s primrose (Primula cusickiana var. maguirei), one of Utah’s most precious botanical treasures. This tiny alpine wildflower might not be the flashiest addition to your garden, but it carries enormous conservation significance and represents the delicate beauty of high-altitude ecosystems. What ...

Rare plant alert!

Region: United States

Status: S1: Status is uncertain but is somewhere between the following rankings: 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) ⚘ Threatened: Experiencing significant population decline or habitat loss that could lead to its endangerment if not addressed. ⚘

Region: United States

Maguire’s Primrose: A Rare Alpine Gem Worth Protecting

Meet Maguire’s primrose (Primula cusickiana var. maguirei), one of Utah’s most precious botanical treasures. This tiny alpine wildflower might not be the flashiest addition to your garden, but it carries enormous conservation significance and represents the delicate beauty of high-altitude ecosystems.

What Makes This Primrose Special?

Maguire’s primrose is a perennial forb—essentially a non-woody flowering plant that comes back year after year. As a member of the primrose family, it produces the characteristic small, delicate flowers that make primroses beloved by gardeners worldwide. However, this particular variety is far from ordinary.

This plant is endemic to Utah, meaning it exists nowhere else on Earth. You’ll find it exclusively in the Uinta Mountains, where it has adapted to harsh alpine conditions over thousands of years.

A Plant in Peril

Important Conservation Note: Before considering growing this plant, you need to know that Maguire’s primrose is critically imperiled. It holds a Global Conservation Status of S1, meaning there are typically five or fewer known populations with very few remaining individuals (fewer than 1,000 total). It’s also listed as Threatened under federal protection.

This rarity status means that if you’re interested in growing Maguire’s primrose, you should only obtain plants or seeds through responsible sources that don’t impact wild populations. Better yet, consider supporting conservation efforts for this species instead of attempting to grow it.

Growing Conditions and Care

If you’re committed to growing this rare beauty through properly sourced material, here’s what you need to know:

  • Climate: Maguire’s primrose thrives in cool, alpine conditions (likely USDA zones 3-6)
  • Soil: Requires exceptionally well-draining soil that mimics its mountain habitat
  • Water: Consistent moisture without waterlogging—think mountain snowmelt conditions
  • Light: Bright light but protection from intense afternoon sun
  • Temperature: Cool summers and cold winters are essential

Garden Role and Design Ideas

This isn’t a plant for the average flower border. Maguire’s primrose belongs in specialized settings:

  • Alpine rock gardens with other high-elevation natives
  • Conservation-focused native plant collections
  • Educational gardens highlighting endangered species
  • Cool-climate rock crevices and scree gardens

Supporting Pollinators and Wildlife

While specific data on Maguire’s primrose is limited, primroses generally support small native pollinators, including specialized bees and flies adapted to alpine conditions. In its natural habitat, this plant likely plays a crucial role in the mountain ecosystem’s food web.

The Bottom Line

Should you plant Maguire’s primrose? The honest answer is probably not—unless you’re deeply committed to conservation and have access to responsibly sourced material. This plant’s rarity makes it more suitable for specialized botanical gardens and conservation programs than home gardens.

Instead, consider supporting conservation efforts for this species or growing other native Utah wildflowers that aren’t critically imperiled. You’ll still get the satisfaction of gardening with natives while helping preserve rare species like Maguire’s primrose for future generations.

Sometimes the best way to love a plant is to admire it from afar and work to protect its wild habitat. That’s definitely the case with this remarkable little primrose.

Maguire’s Primrose

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Primulales

Family

Primulaceae Batsch - Primrose family

Genus

Primula L. - primrose

Species

Primula cusickiana (A. Gray) A. Gray - Cusick's primrose

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