Oxalis Regnellii Lucky Shamrock 20 Flower Bulbs – White Blooms & Green Foliage Oxalis Regnellii ‘ Lucky Shamrock. The pure-white flowers sweep gracefully from their stems atop the unique, triangular foliage, making Oxalis Regnellii a stand-out feature on windowsills, along decks, in pots, and around porch edgings.
