North America Native Plant

Maguire’s Lewisia

Botanical name: Lewisia maguirei

USDA symbol: LEMA3

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Maguire’s Lewisia: A Rare Nevada Gem for the Dedicated Rock Gardener If you’re looking for a plant that screams exclusive, you’ve found your match in Maguire’s lewisia (Lewisia maguirei). This little Nevada native is so rare that spotting one in the wild is like finding a four-leaf clover in a ...

Rare plant alert!

Region: Conservation status by state

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) ⚘

Maguire’s Lewisia: A Rare Nevada Gem for the Dedicated Rock Gardener

If you’re looking for a plant that screams exclusive, you’ve found your match in Maguire’s lewisia (Lewisia maguirei). This little Nevada native is so rare that spotting one in the wild is like finding a four-leaf clover in a field of three-leafers. But before you get too excited about adding this botanical treasure to your garden, there’s something important you need to know.

A Plant on the Edge

Maguire’s lewisia holds a Global Conservation Status of S1, which translates to Critically Imperiled. In plain English? This plant is hanging on by a thread, with typically five or fewer known locations and fewer than 1,000 individuals remaining in the wild. That’s rarer than a parking spot at the mall during holiday shopping!

Important: If you’re considering growing this plant, please ensure you source it only from reputable nurseries that propagate it responsibly. Never collect from wild populations – these plants need every individual they can get to survive as a species.

Where in the World?

This exclusive little plant calls Nevada home and nowhere else. It’s what botanists call an endemic species – essentially a homebody that never left its original neighborhood. Lewisia maguirei is native to the lower 48 states but keeps things very local within the Silver State.

What Makes It Special?

Maguire’s lewisia is a perennial forb, which is just a fancy way of saying it’s a non-woody herbaceous plant that comes back year after year. Think of it as the plant kingdom’s version of a succulent – it forms attractive rosettes and produces the characteristic colorful flowers that make the Lewisia genus so beloved by rock garden enthusiasts.

As a member of the Lewisia family, this plant likely showcases:

  • Compact, rosette growth habit
  • Succulent-like leaves that store water
  • Showy flowers in shades of pink to white
  • Slow but steady growth rate

Garden Role and Design Ideas

If you’re lucky enough to acquire responsibly-sourced Maguire’s lewisia, it’s perfect for:

  • Rock gardens and alpine collections
  • Specialized native plant displays
  • Container gardens with excellent drainage
  • Conservation-focused landscapes

This isn’t a plant for beginners or casual gardeners – it’s for dedicated rock gardeners and native plant enthusiasts who appreciate rarity and want to contribute to conservation efforts.

Growing Conditions and Care

Like most mountain natives from Nevada, Maguire’s lewisia likely demands:

  • Exceptional drainage (think desert meets mountain)
  • Rocky, mineral-rich soil
  • Protection from excessive moisture, especially in winter
  • Cool temperatures and good air circulation

Based on its Nevada mountain habitat, this plant is likely hardy in USDA zones 4-7, though it may need winter protection in areas with wet winters.

The Bottom Line

Should you grow Maguire’s lewisia? Only if you’re a dedicated rock gardener with experience growing challenging alpine plants, and only with plants from reputable sources that propagate responsibly. This isn’t a plant to impulse-buy at the garden center – it’s a commitment to conservation and a testament to your gardening skills.

If you’re new to native gardening or looking for easier Nevada natives, consider starting with more common species first. But if you’re up for the challenge and want to help preserve a truly rare piece of Nevada’s natural heritage, Maguire’s lewisia might just be the crown jewel your rock garden has been waiting for.

Maguire’s Lewisia

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Caryophyllales

Family

Portulacaceae Dumort. - Purslane family

Genus

Lewisia Pursh - lewisia

Species

Lewisia maguirei A.H. Holmgren - Maguire's lewisia

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