North America Native Plant

Smooth Babybonnets

Botanical name: Coursetia glabella

USDA symbol: COGL7

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Benthamantha edwardsii (A. Gray) Rose var. glabella (A. Gray) Wiggins (BEEDG)  âš˜  Benthamantha glabella (A. Gray) Rydb. (BEGL3)  âš˜  Cracca edwardsii A. Gray var. glabella (CREDG)  âš˜  Cracca glabella (A. Gray) Lavin (CRGL11)   

Smooth Babybonnets: A Hidden Gem for Desert Gardens If you’re looking to add a touch of understated elegance to your water-wise garden, smooth babybonnets might just be the perfect plant you’ve never heard of. This charming native perennial brings delicate beauty to desert landscapes while requiring minimal care once established. ...

Rare plant alert!

Region: Conservation status by state

Status: S3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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 ⚘

Smooth Babybonnets: A Hidden Gem for Desert Gardens

If you’re looking to add a touch of understated elegance to your water-wise garden, smooth babybonnets might just be the perfect plant you’ve never heard of. This charming native perennial brings delicate beauty to desert landscapes while requiring minimal care once established.

What Are Smooth Babybonnets?

Smooth babybonnets (Coursetia glabella) is a native perennial forb that belongs to the legume family. Unlike woody shrubs or trees, this plant maintains soft, herbaceous growth above ground while developing a hardy root system below. As a member of the pea family, it produces small, delicate flowers and compound leaves that give it an almost fern-like appearance.

You might also encounter this plant listed under several scientific synonyms in older gardening references, including Benthamantha glabella or Cracca glabella, but don’t let the name confusion discourage you – it’s the same lovely plant.

Where Does It Come From?

Smooth babybonnets is proudly native to the American Southwest, specifically calling Arizona home. This limited geographic distribution makes it a true regional treasure for gardeners in desert climates.

A Word About Rarity

Here’s something important to know: smooth babybonnets has a conservation status that suggests it may be uncommon in the wild. If you decide to grow this plant, please make sure you’re getting it from reputable nurseries that propagate their own stock rather than wild-collecting. This way, you can enjoy this native beauty while helping protect wild populations.

Why Grow Smooth Babybonnets?

There are several compelling reasons to consider adding smooth babybonnets to your garden:

  • True native appeal: Supporting local ecosystems with plants that naturally belong in your region
  • Water-wise choice: Adapted to arid conditions, requiring minimal irrigation once established
  • Pollinator friendly: As a legume, it likely attracts native bees and other beneficial insects
  • Low maintenance: Perennial nature means it returns year after year without replanting
  • Unique character: Adds textural interest with its delicate, compound foliage

Perfect Garden Settings

Smooth babybonnets shines brightest in:

  • Native plant gardens focused on regional flora
  • Xeriscaped landscapes designed for water conservation
  • Desert-themed gardens that celebrate arid beauty
  • Naturalized areas where wild character is desired
  • Rock gardens with well-draining conditions

Growing Conditions and Care

Success with smooth babybonnets comes from mimicking its natural desert habitat:

Climate: Best suited for USDA hardiness zones 8-10, where winters are relatively mild and summers can be quite hot and dry.

Sunlight: Provide full sun exposure for the healthiest growth and best flowering.

Soil: Well-draining soil is absolutely essential. Sandy or rocky soils work wonderfully, while clay soils should be amended or avoided entirely.

Water: Once established, this drought-tolerant plant needs very little supplemental watering. Deep, infrequent watering works better than frequent shallow watering.

Maintenance: Minimal care required! Simply remove any dead growth in late winter and enjoy watching it return each spring.

The Bottom Line

Smooth babybonnets offers gardeners in appropriate climates a wonderful opportunity to grow something truly special – a native plant that’s both beautiful and perfectly adapted to local conditions. While its rarity means we should source it responsibly, its low-maintenance nature and ecological benefits make it a worthwhile addition to water-wise gardens.

If you’re gardening in Arizona or similar desert climates, consider giving smooth babybonnets a try. You’ll be supporting native plant conservation while adding a unique, drought-tolerant perennial to your landscape that asks for little but gives plenty in return.

Smooth Babybonnets

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Coursetia DC. - babybonnets

Species

Coursetia glabella (A. Gray) Lavin - smooth babybonnets

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