USDA Hardiness Zone 5A spans a wide swath of the central United States โ including much of Iowa, Illinois, Ohio, Pennsylvania, and Colorado's Front Range โ with average annual minimum temperatures between -20ยฐF and -15ยฐF. The growing season averages 166 frost-free days between a last spring frost around Apr 25 and first fall frost near Oct 8. This is a versatile zone: warm-season crops like tomatoes and peppers have ample time to mature, and cool-season crops can be planted in both spring and fall for two distinct harvests. 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 5A Planting Guide
Last Spring Frost
Apr 25
First Fall Frost
Oct 8
Growing Season
166 days
Planting dates for 100 vegetables, herbs, and flowers โ computed from Zone 5A frost dates.
Browse all 100 Zone 5A plant guides โ
Jump directly to the detailed growing guide for any plant in Zone 5A.
๐ฅฌ Vegetables
๐ฟ Herbs
๐ธ Flowers
๐ Growing guides for Zone 5A
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 Midwest Regional Bundle โ $5.99 (save $3.49)
Both essential planning tools for the Midwest region โ calendar plus worksheet, bundled at $3.49 off.
Buy bundle for $5.99๐ Midwest Planting Calendar โ $4.49
Month-by-month planting dates for 100 crops across every zone in the Midwest region. Printable PDF.
Buy for $4.49๐ Midwest Planning Worksheet โ $4.99
Map beds, track planting dates, and plan rotations with zone-specific frost windows pre-filled for the Midwest region.
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