🌽 Can I Plant Corn in Louisville, KY?

2026 planting guide for Zone 6b · Last frost ~April 10 · Growing season ~198 days

✅ YES — Conditions look good

Temperature conditions are suitable for Corn.

Planting window: Aug 13 – Aug 27
Good to go — plant now while conditions are right.
Live result based on current forecast for Louisville, KY · Updates every 6 hours
USDA Zone
6b
Last Spring Frost
~April 10
First Fall Frost
October 25
Growing Season
~198 days
Ideal Temp for Corn
65–95°F
Frost Risk
⚠️ Sensitive

Growing Corn in Louisville

Louisville's Zone 6b climate along the Ohio River gives gardeners approximately 195 frost-free days. The city's position in the transition zone means warm, humid summers perfect for tomatoes and peppers. Start warm-season crops indoors in mid-March for transplanting after mid-April. Fall gardens of kale, lettuce, and broccoli thrive in the mild October temperatures.

In Louisville (last frost around April 10), aim to direct sow or transplant corn outside around April — approximately 2 weeks after your last expected frost.

Corn thrives between 65°F and 95°F. It is frost-sensitive, meaning a single freeze at 32°F will damage or kill it — always wait until frost danger has fully passed. Expect 60–100 days from transplant to first harvest. Needs warm soil. Plant in blocks.

Frequently Asked Questions

When can I plant corn in Louisville, KY?

In Louisville (last frost around April 10), aim to direct sow or transplant corn outside around April — approximately 2 weeks after your last expected frost.

What is the USDA hardiness zone for Louisville?

Louisville, KY is in USDA Plant Hardiness Zone 6b. The last expected spring frost is around April 10, and the first fall frost arrives around October 25. This zone classification helps you understand which perennials survive winter and when annual vegetables can safely go outdoors.

Is it safe to plant corn outside in Louisville right now?

That depends on the current weather forecast. Corn needs temperatures above 55°F (ideally 65–95°F) to thrive. CanIPlant checks your real 7-day forecast and any active frost alerts to give you a live YES, NO, or WAIT answer — just enter your ZIP code.

Can I grow corn in Louisville 2026?

Yes — Corn grows well in Louisville, KY. With a Zone 6b climate and a growing season of ~198 days, Louisville is well-suited for warm-season crops like corn. Just wait until after the last frost (around April 10) before moving plants outside.

Grow Corn in Other Cities

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