(Leucanthemum x superbum)
No staking is required for the 36-inch-tall, rigid stems that bear these coarse yellow disks rimmed with vibrant white petals. For color from July to September try 'Becky,' which grows taller than other cultivars but has slightly smaller 3- to 4-inch flower heads over medium-green lance-shaped leaves.
Grows 3 to 4 feet tall and 2 to 3 feet wide in USDA Hardiness Zones
5 to 9; full sun.