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A picture of a White Mouth Dayflower

White Mouth Dayflower

Commelina erecta

Also known as

White Mouth Day flower, Slender Dayflower, Slender Day flower, Widow's Tears

Photo by Christian Grenier (CC0)

Full Sun

Expected size

3 years to reach maturity


  • spring
  • summer
  • autumn
  • winter

More images of White Mouth Dayflower

A close up of a blue Commelina erecta flower
A close up of a blue Commelina erecta flower
A close up of a Commelina erecta plant with green leaves and blue flowers

White Mouth Dayflower Overview

Commelina erecta is a variable, perennial species commonly known by the name White Mouth Dayflower because of their short flower lifespan. They are often grown as annuals in temperate regions and are considered annual weeds, they are also considered annual or perennial weeds in tropical locations. They produce flowers one at a time and these last for a short time. The flowers are small, 3-petalled, blue-white, saucer-shaped and encased in a spathe-like modified leaf structure. Flower structure is only symmetrical in one plane, with the petals differing in size and shape across the flower, with two larger top petals coloured blue and a reduced lower petal coloured white.

How to propagate White Mouth Dayflower




Special features of White Mouth Dayflower

Attractive flowers

Attractive leaves