Zone 6B is a excellent gardening zone with long frost-free season. With an average last spring frost around Apr 10 and first fall frost around Oct 20, you have approximately 193 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.