Sturdy stems and flowers make Becky shasta daisy (Leucanthemum Ã— superbum 'Becky') stand out in windy and rainy weather. Porcelain-white flowers with yellow centers are produced atop 3-foot stems from midsummer up to frost (if regularly deadheaded). Its leaf growth tops out at 1 foot in height, and a clump can spread to 2 feet across. This daisy is a reliable, long-term perennial for the Chicago region.