Often called Wood Sorrel, Sourgrass or Fake Shamrocks, there is nothing fake about the beauty of the foliage and delicate flowers Oxalis produces, either as house or garden plants. With over 800 species available, Oxalis flowers can be single or double, as well as single-colour (usually white, yellow, pink, peach) or multi-coloured and can be enjoyed between May through to October. Even the foliage varies between green and deep purple, according to species, but all feature four Shamrock-like leaflets. Sour-tasting oxalic acid in the leaves and flowers makes some species of the plant usable as food or medicine, but if consumed in large quantities, it may be slightly toxic. Oxalis likes good light, but not too much direct sun.