Whitemouth Dayflower

(Commelina erecta)

Whitemouth Dayflower (Commelina erecta)

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Estimated Native Range
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Summary

Commelina erecta, commonly known as Whitemouth Dayflower, Slender Dayflower, or Widow’s Tears, is a perennial herb that is native to a wide range of habitats including open woodlands, grasslands, and roadsides across the Americas and Africa. It is the most variable species of Commelina in North America. This plant typically grows to a height of 10-18 inches (25-45 cm) and spreads to form a ground cover. It features lance-shaped leaves and distinctive tri-petaled flowers that are a striking blue with a white center, blooming from late spring to early fall. The flowers are ephemeral, typically lasting for only one day, but they are quite showy during their brief display.

Whitemouth Dayflower is valued for its drought tolerance and its ability to thrive in a variety of soil conditions, making it a versatile choice for xeriscaping and naturalized areas. It is often used in borders, rock gardens, and as a ground cover in areas where other plants might struggle. It prefers full sun but can tolerate part shade, and while it adapts to different soil types, it performs best in well-drained soils. There are no major disease or pest issues, but it can become invasive in some regions, so gardeners should monitor its spread.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 0.8-1 feet
  • Width: 1-3 feet
  • Growth Rate: Moderate
  • Flower Color: Blue
  • Flowering Season: Spring, Fall
  • Leaf Retention: Deciduous, Semi-deciduous

Growth Requirements

  • Sun: Full Sun
  • Water: Low, Medium
  • Drainage: Medium, Slow

Common Uses

Bee Garden, Bird Garden, Butterfly Garden, Edible*Disclaimer: Easyscape's listed plant edibility is for informational use. Always verify the safety and proper identification of any plant before consumption., Groundcover, Low Maintenance, Rock Garden

Natural Habitat

Open woodlands, grasslands, and roadsides across the Americas and Africa

Other Names

Common Names: Slender Dayflower , Widow’s Tears , Erect Dayflower

Scientific Names: Commelina erecta , Commelina erecta var. erecta , Commelina erecta f. erecta , Commelina sulcata , Commelina albescens , Commelina auriculata , Commelina bahiensis , Commelina erecta var. typica , Commelina gerrardii subsp. maritima , Commelina hamipila

GBIF Accepted Name: Commelina erecta L.