Coming in to bright yellow bloom all around the neighbourhood under hedges and fences.
Also known as African wood-sorrel, Bermuda sorrel, Buttercup oxalis, Cape sorrel, English weed, Goat's-foot, Sourgrass, Soursob and Soursop. A species of flowering plant in the wood sorrel family Oxalidaceae. The plant has a reputation for being very difficult to eliminate once it has spread over an area of land. The weed propagates largely through its underground bulbs and this is one reason why it is so difficult to eradicate, as pulling up the stems leaves the bulbs behind. Soil in which the plant has grown is generally filled with small bulbs. (Wikipedia)