Plural of dayflower; small flowering plants with delicate petals that typically bloom for only one day.
From 'day' + 'flower,' named for the characteristic that the blossoms open in the morning and close by afternoon. The genus name is Commelina, used since the 18th century to describe these garden plants.
Dayflowers are nature's pocket watches—they're so reliable about opening and closing at specific times that some plants open and close their flowers at almost the exact same moment every single day, helping pollinators know exactly when to visit.
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