These annuals can grow up to 6 feet with 3-inch, bright red-orange blooms. They feature deep green, coarse foliage and multiple stems per plant. Mexican sunflowers can complete two generations in a single summer, attracting butterflies and skippers to your garden in the process. Give this plant some room: a single planting can grow into a 4-foot-wide cluster. USDA Zones 4-10TOH Tip:
Flower stems are hollow and fragile. To prevent accidental bends and breaks when cutting, use an especially sharp tool.