When to Plant in Cincinnati, OH

Cincinnati sits in the warmest part of Ohio — Zone 6b along the Ohio River valley. The last frost typically falls around April 19, giving Cincinnati a slightly longer growing season than northern Ohio cities like Cleveland or Columbus.

The Ohio River valley moderates temperatures, making Cincinnati's climate more similar to Louisville, Kentucky than northern Ohio. Spring arrives earlier, fall lingers longer, and the summer heat from June through August can be intense.

This month in Cincinnati: November 2026

Cincinnati's first frost usually comes around October 17, so November is about harvesting what's left and getting the beds ready for winter. Down in the river valley the cold settles in first.

Kale, collards, and carrots keep going all month and taste sweeter after each cold night. Spinach planted in early fall can stay in under a row cover, and it will often start growing again in March.

Garlic still has time in early November. Mix compost into that clay before you plant so the cloves don't sit wet. Then cover the empty beds with shredded leaves; it keeps the soil from packing down under the winter rain.

Updated November 3, 2026

What to plant now in Cincinnati

Spring: After April 19 last frost — tomatoes, peppers, squash, beans, cucumbers, and corn.
Early Spring (Mar–Apr): Cold-hardy crops — peas, lettuce, spinach, kale, and onion sets.
Fall: Excellent — broccoli, kale, lettuce, carrots, spinach, and fall beans.
Winter: Garlic planted in October overwinters. Cover crops and planning.

In Cincinnati (181 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.

Month by month in Cincinnati

Month	What to do
January	Order seeds. Start onion seeds indoors late January.
February	Start tomato and pepper seeds indoors.
March	Direct sow peas and spinach as soil thaws. Transplant cold-hardy seedlings.
April	After April 15 — transplant tomatoes and peppers. Direct sow beans and squash.
May	Full spring garden. Plant cucumbers and corn.
June	Summer garden growing. Water deeply during heat.
July	Harvest summer crops. Start fall brassica seeds indoors.
August	Plant fall broccoli, kale, and cauliflower transplants. Direct sow carrots.
September	Fall planting: lettuce and spinach.
October	First frost mid-October. Plant garlic. Harvest tender crops.
November	Cold-hardy greens continue. Clean up beds.
December	Rest season. Plan next year.

Frost dates for Cincinnati ZIP codes

ZIP	Last spring frost (50%)	First fall frost (50%)	Zone
45238	April 19	October 17	6b
45240	April 19	October 17	6b
45233	April 19	October 17	6b
45207	April 19	October 17	6b

FAQ

When is the last frost date in Cincinnati, OH?

Cincinnati's average last frost date is around April 19 — earlier than northern Ohio cities like Cleveland (April 19) due to the Ohio River valley's warming effect.

How does Cincinnati's climate compare to northern Ohio?

Cincinnati is noticeably warmer than Cleveland or Toledo. You can plant 1–2 weeks earlier in spring, and fall arrives 1–2 weeks later. The river valley creates a warmer microclimate.

What grows best in Cincinnati?

Tomatoes, peppers, squash, and beans perform excellently in spring. Fall is outstanding for broccoli, kale, lettuce, carrots, and spinach.

When should I plant tomatoes in Cincinnati?

Start seeds indoors in mid-March. Transplant outdoors after April 15th. Cincinnati's longer season supports excellent tomato production.

How does Plan My Garden help Cincinnati gardeners?

Enter your Cincinnati zip code for exact planting dates calibrated to the Ohio River valley's unique warmer microclimate.