North America Native Plant

Thurber’s Checkerbloom

Botanical name: Sidalcea neomexicana thurberi

USDA symbol: SINET

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Sidalcea neomexicana A. Gray var. parviflora Greene (SINEP)   

Thurber’s Checkerbloom: A Southwestern Native Worth Knowing If you’re passionate about native plants and love discovering lesser-known gems for your garden, let me introduce you to Thurber’s checkerbloom (Sidalcea neomexicana thurberi). This charming perennial wildflower might not be as famous as some of its showier cousins, but it holds a ...

Rare plant alert!

Region: Conservation status by state

Status: S4?T3T4: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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 ⚘ Subspecies or varieties is apparently secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the region or more than 10,000 individuals ⚘

Thurber’s Checkerbloom: A Southwestern Native Worth Knowing

If you’re passionate about native plants and love discovering lesser-known gems for your garden, let me introduce you to Thurber’s checkerbloom (Sidalcea neomexicana thurberi). This charming perennial wildflower might not be as famous as some of its showier cousins, but it holds a special place in the native plant world of the American Southwest.

What is Thurber’s Checkerbloom?

Thurber’s checkerbloom is a perennial forb—essentially a non-woody flowering plant that comes back year after year. As a member of the mallow family, it shares DNA with more familiar plants like hollyhocks and hibiscus, though it maintains its own unique southwestern charm. You might also see it listed in botanical references under its synonym, Sidalcea neomexicana A. Gray var. parviflora Greene.

Where Does It Call Home?

This native beauty has made itself at home across four southwestern states:

  • Arizona
  • California
  • New Mexico
  • Texas

As a true native of the lower 48 states, Thurber’s checkerbloom has evolved alongside local ecosystems for thousands of years, making it perfectly adapted to its regional conditions.

Should You Plant Thurber’s Checkerbloom?

Here’s where things get a bit tricky, and honestly, quite interesting from a conservation perspective. Thurber’s checkerbloom carries a Global Conservation Status of S4?T3T4, which essentially means scientists aren’t entirely certain about its current population status—the question mark says it all! This uncertainty suggests we should treat this plant with extra care and respect.

If you’re considering adding this native to your garden, here’s what you need to know:

  • Only source plants or seeds from reputable native plant nurseries that practice ethical collection
  • Never collect from wild populations
  • Consider it a specialty plant for dedicated native plant gardeners
  • Understand that growing information is limited, so you’ll be somewhat of a pioneer gardener

The Reality of Growing Thurber’s Checkerbloom

Let’s be honest—specific cultivation information for Thurber’s checkerbloom is quite scarce. This isn’t necessarily a bad thing; it just means you’ll need to approach growing this plant with some detective work and patience. As a southwestern native, it’s likely adapted to:

  • Hot, dry summers
  • Well-draining soils
  • Minimal supplemental watering once established
  • Full to partial sun conditions

Supporting Native Plant Conservation

By choosing to grow lesser-known natives like Thurber’s checkerbloom, you’re doing more than just gardening—you’re participating in plant conservation. Every garden that includes rare or uncommon natives serves as a genetic repository and helps maintain biodiversity.

However, if you’re looking for a more readily available checkerbloom for your southwestern garden, consider researching other Sidalcea species that might be better documented and more easily sourced.

The Bottom Line

Thurber’s checkerbloom represents the fascinating world of specialized native plants. While it might not be the easiest plant to find or grow, it offers dedicated native plant enthusiasts a chance to cultivate something truly special. Just remember—with great botanical beauty comes great responsibility. Source ethically, garden thoughtfully, and enjoy being part of this plant’s conservation story.

If you do decide to take on the challenge of growing Thurber’s checkerbloom, consider connecting with local native plant societies or botanical gardens. They might have additional insights or even access to responsibly sourced material. After all, the best native plant gardens are built through community knowledge and shared passion for preserving our natural heritage.

Thurber’s Checkerbloom

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

Malvales

Family

Malvaceae Juss. - Mallow family

Genus

Sidalcea A. Gray - checkerbloom

Species

Sidalcea neomexicana A. Gray - salt spring checkerbloom

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