USDA Hardiness Zone 9B covers southern Florida, the lower Rio Grande Valley, and parts of coastal Southern California, with average annual minimum temperatures between 25ยฐF and 30ยฐF. The growing season stretches to approximately 298 frost-free days, from a last spring frost around Feb 15 to a first fall frost near Dec 10. With nearly ten months of frost-free weather, Zone 9B allows gardeners to grow subtropical crops and maintain production nearly year-round. The coolest months โ December through February โ are prime time for leafy greens, root vegetables, and brassicas. 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.
๐ฑ Zone 9B Planting Guide
Last Spring Frost
Feb 15
First Fall Frost
Dec 10
Growing Season
298 days
Planting dates for 100 vegetables, herbs, and flowers โ computed from Zone 9B frost dates.
Browse all 100 Zone 9B plant guides โ
Jump directly to the detailed growing guide for any plant in Zone 9B.
๐ฅฌ Vegetables
๐ฟ Herbs
๐ธ Flowers
๐ Growing guides for Zone 9B
Hand-picked posts from the GardeningByZone blog that apply to your zone.
๐จ๏ธ Printable calendars & worksheets
Instant PDF downloads matched to your region. Print and tuck into your garden journal.
๐ฆ Florida Regional Bundle โ $5.99 (save $3.49)
Both essential planning tools for the Florida region โ calendar plus worksheet, bundled at $3.49 off.
Buy bundle for $5.99๐ Florida Planting Calendar โ $4.49
Month-by-month planting dates for 100 crops across every zone in the Florida region. Printable PDF.
Buy for $4.49๐ Florida Planning Worksheet โ $4.99
Map beds, track planting dates, and plan rotations with zone-specific frost windows pre-filled for the Florida region.
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