WEED ID · BROADLEAF WEED
Dayflower
Also called Spreading dayflower, whitemouth dayflower, Commelina
A sprawling broadleaf weed with small blue flowers. Its stems root wherever they touch moist soil, so it spreads in lawns and beds.

How to spot it
- Small flower with two blue petals and one smaller white petal
- Each flower opens for only a morning
- Smooth, hairless leaves with parallel veins and a sheath around the stem
- Soft, sprawling stems that root at the joints
- Likes moist, partly shaded spots
Why it shows up
Dayflower spreads by seed and by stem pieces that root where they touch the soil. It does best in moist, shady spots with good soil. Bits left behind after pulling can grow into new plants.
How we treat it
In the lawn, we spot treat with a product labeled for broadleaf weeds and for your grass type. In beds, we hand pull and clean out the stems. We also fertilize to keep your turf thick.
What you can do
- Pull it and get every piece of stem. Bits left behind can root and regrow.
- Fix wet spots and watch where water pools. It likes moist soil.
- Look for it in mid-summer when the blue flowers show.
WANT IT HANDLED?
Let a licensed applicator take it from here.
Tell us about your lawn. We’ll get back to you with a free quote.
Prefer to talk? 817-382-1722Licensed applicator, Texas Department of Agriculture · License #0984138