Zone 9A is a warm subtropical zone with primary gardening in fall and spring. With an average last spring frost around Feb 28 and first fall frost around Nov 28, you have approximately 273 frost-free days per year. Use the planting dates below to plan your garden around these key frost windows. For a personalized forecast based on your specific zip code, use our free planting calendar. Browse individual plant guides for detailed growing instructions, or explore how USDA zones work to better understand your growing conditions.