Can You Grow Corn in Idaho?
US · USDA Zone 6b · zones 3b, 4a, 4b, 5a, 5b, 6a, 6b
Corn grows well here — plant in blocks after last frost for a summer harvest.
Plant zones
Idaho last frost
Idaho first frost
Days to harvest
When to plant Corn in Idaho
Direct sow
Harvest
Dates are approximate, based on Idaho's average frost dates. Your exact yard may vary by microclimate.
About Corn
Corn needs space warmth and wind-pollination — plant in blocks not rows for good pollination.
Direct sow after soil reaches 16°C. Plant in a 4x4 block minimum for wind pollination. Needs consistent water especially during tasselling. Not suitable for containers.
Gardening in Idaho
Idaho has a semi-arid continental climate. Southern valleys are Zone 6-7 with hot dry summers; northern regions and mountains are colder. Excellent for root vegetables and cool crops.
Frequently asked questions
Can you grow Corn in Idaho?
Corn grows well here — plant in blocks after last frost for a summer harvest.
What zone is Idaho?
Idaho spans USDA Zone 6b (3b, 4a, 4b, 5a, 5b, 6a, 6b).
When do you plant Corn in Idaho?
Plant Corn Mar 15, harvest May 14 – Jun 13.