North America Native Plant

Birdbill Dayflower

Botanical name: Commelina dianthifolia var. dianthifolia

USDA symbol: CODID

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Birdbill Dayflower: A Charming Native Groundcover for Southwestern Gardens If you’re looking for a low-maintenance native plant that brings delicate beauty to your southwestern garden, meet the birdbill dayflower (Commelina dianthifolia var. dianthifolia). This charming perennial might not be the showiest plant in your garden, but it has a quiet ...

Birdbill Dayflower: A Charming Native Groundcover for Southwestern Gardens

If you’re looking for a low-maintenance native plant that brings delicate beauty to your southwestern garden, meet the birdbill dayflower (Commelina dianthifolia var. dianthifolia). This charming perennial might not be the showiest plant in your garden, but it has a quiet elegance that makes it a wonderful addition to naturalized landscapes and native plant gardens.

What Makes Birdbill Dayflower Special

The birdbill dayflower is a true southwestern native, naturally occurring across Arizona, New Mexico, and Texas. As a member of the spiderwort family, this herbaceous perennial produces small, three-petaled blue flowers that open in the morning and typically close by afternoon – hence the dayflower part of its name. The delicate blooms peek out from heart-shaped leaves, creating a subtle but lovely display throughout the growing season.

This native beauty grows as a low-growing forb, meaning it’s an herbaceous plant without woody stems. Don’t let its delicate appearance fool you though – once established, birdbill dayflower is quite hardy and drought-tolerant.

Why Choose Birdbill Dayflower for Your Garden

There are several compelling reasons to consider adding this native plant to your landscape:

  • Native plant benefits: Supporting local ecosystems and wildlife
  • Low maintenance: Requires minimal care once established
  • Drought tolerance: Perfect for water-wise gardening
  • Pollinator support: Attracts bees and other beneficial insects
  • Natural groundcover: Spreads gently to fill in garden areas

Where Birdbill Dayflower Thrives

This adaptable native works beautifully in several garden settings:

  • Desert and xeriscape gardens
  • Native plant landscapes
  • Wildflower meadows
  • Naturalized areas
  • Rock gardens

Birdbill dayflower is hardy in USDA zones 7-10, making it perfect for most southwestern gardens.

Growing Conditions and Care

One of the best things about birdbill dayflower is how easy it is to grow. Here’s what this native beauty needs to thrive:

Light: Partial shade to full sun – it’s quite adaptable to different lighting conditions

Soil: Well-draining soil is essential. This plant doesn’t like wet feet, so avoid heavy clay or areas that stay soggy

Water: Drought-tolerant once established, but appreciates occasional deep watering during extremely dry periods

Maintenance: Very low maintenance. The plant may go dormant during extreme heat or cold, which is completely normal

Planting and Establishment Tips

Getting birdbill dayflower established in your garden is straightforward:

  • Plant in spring or fall when temperatures are moderate
  • Ensure good drainage – amend heavy soils with sand or gravel if needed
  • Water regularly during the first growing season to help establish roots
  • Once established, reduce watering frequency
  • Allow the plant to spread naturally as groundcover

Supporting Wildlife

Like many native plants, birdbill dayflower provides valuable benefits to local wildlife. The flowers attract small pollinators, including native bees, contributing to the health of your local ecosystem. By choosing natives like this dayflower, you’re creating habitat and food sources that have supported regional wildlife for thousands of years.

Is Birdbill Dayflower Right for You?

Consider birdbill dayflower if you’re looking for a low-maintenance native plant that provides gentle groundcover and supports pollinators. It’s particularly well-suited for gardeners in the Southwest who want to create sustainable, water-wise landscapes that celebrate regional flora.

While it may not be the most dramatic plant in your garden, birdbill dayflower offers the quiet satisfaction that comes with growing native species – you’ll know you’re supporting local ecosystems while enjoying a plant that’s perfectly adapted to your region’s conditions.

This charming native deserves consideration for any southwestern garden focused on sustainability, low maintenance, and ecological stewardship. Sometimes the most rewarding plants are the humble ones that simply belong.

Birdbill Dayflower

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Commelinales

Family

Commelinaceae Mirb. - Spiderwort family

Genus

Commelina L. - dayflower

Species

Commelina dianthifolia Delile - birdbill dayflower

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