Type: Broadleaf perennial

Size: To 20 inches tall

Where It Grows: Sunny or shady landscape, lawn, or garden areas

Appearance: This garden weed has light green leaves that look like clover and cup-shape yellow flowers in summer and fall.

Control: Mulch garden areas in spring to prevent weeds. Pull oxalis weeds by hand or spray weeds with a postemergence herbicide in spring or fall.

Test Garden Tip: The leaves of oxalis are edible in small quantities and have a sharp, sour taste. However, plants should not be eaten if they have been treated with pesticide. The plant can be harmful if eaten in large amounts.