Yellow Woodsorrel University Links Control Options Germination Dates Photograph from Weeds of Southern Turgrasses , Cooperative Extension Service, University of Georgia College of Agricultural and Environmental Sciences, Athens. Spreading dayflower is an annual with multiple branches that spreads by taking root from nodes along stems.
Stems are smooth with lance shaped leaves in sheaths having a few soft hairs.
Flowers have three blue petals, two of which are partly fused. Flowers last one day, giving the plant its common name. Dayflower reproduces from seed and from nodes along stems. Stem fragments will also reproduce. Dayflower prefers rich, moist soil conditions.