A lovely shamrock forming low mounds of rich burgundy leaves with an architectural triangular shape in summer a profusion of funnel45shaped white flowers appear which have the fascinating ability to open in sunny weather and close when it is overcast oxalis triangularis 39burgundy wine39 is ideal for growing in patio pots window boxes and rock gardens or for adding an exotic touch to sunny beds and borders height 20cm 4083441 spread 30cm 40123441