When to plant · 31 cities · zones 6a–7a
When to plant basil in Ohio
Start Genovese Basil seeds indoors around Mar 27 and transplant around May 8 — the Ohio statewide median, counted from a last spring frost of Apr 24 across 1,178 ZIP codes and 140 NOAA stations.
The rule: Basil is damaged below about 50 °F, well before frost: transplant two weeks after the last frost, not on it.
Ohio basil, by step
Statewide median last frost Apr 24, first fall frost Oct 22, 2027 season. Each cultivar's own indoor lead time and days to maturity, same engine as the Plan Builder.
| Cultivar | Start indoors | Plant out | First harvest | Days |
|---|---|---|---|---|
| Genovese BasilGenovese | Mar 27 | May 8 | Jul 7 | 60 from transplant |
Tight means first harvest lands within two weeks of the median first fall frost. Statewide dates are the ZIP-weighted median of every NOAA 1991–2020 station Ohio's ZIP codes resolve to.
Basil in Ohio, city by city
Genovese Basil, scheduled from each city's nearest NOAA station — the same dates as its frost page.
| City | Last frost | Start indoors | Plant out | First harvest |
|---|---|---|---|---|
| Columbuszone 6b | Apr 20 | Mar 23 | May 4 | Jul 3 |
| Clevelandzone 7a | Apr 8 | Mar 11 | Apr 22 | Jun 21 |
| Cincinnatizone 6b | Apr 16 | Mar 19 | Apr 30 | Jun 29 |
| Toledozone 6b | Apr 20 | Mar 23 | May 4 | Jul 3 |
| Akronzone 6b | Apr 24 | Mar 27 | May 8 | Jul 7 |
| Daytonzone 6b | Apr 18 | Mar 21 | May 2 | Jul 1 |
| Parmazone 6b | Apr 20 | Mar 23 | May 4 | Jul 3 |
| Cantonzone 6b | Apr 24 | Mar 27 | May 8 | Jul 7 |
| Lorainzone 6b | Apr 24 | Mar 27 | May 8 | Jul 7 |
| Hamiltonzone 6b | Apr 22 | Mar 25 | May 6 | Jul 5 |
| Youngstownzone 6a | May 1 | Apr 3 | May 15 | Jul 14 |
| Springfieldzone 6a | Apr 25 | Mar 28 | May 9 | Jul 8 |
| Ketteringzone 6b | Apr 18 | Mar 21 | May 2 | Jul 1 |
| Elyriazone 6b | Apr 24 | Mar 27 | May 8 | Jul 7 |
| Middletownzone 6b | Apr 24 | Mar 27 | May 8 | Jul 7 |
| Newarkzone 6a | Apr 29 | Apr 1 | May 13 | Jul 12 |
| Cuyahoga Fallszone 6b | Apr 24 | Mar 27 | May 8 | Jul 7 |
| Lakewoodzone 7a | Apr 20 | Mar 23 | May 4 | Jul 3 |
| Dublinzone 6b | Apr 22 | Mar 25 | May 6 | Jul 5 |
| Euclidzone 7a | Apr 8 | Mar 11 | Apr 22 | Jun 21 |
| Beavercreekzone 6b | Apr 18 | Mar 21 | May 2 | Jul 1 |
| Mansfieldzone 6a | Apr 26 | Mar 29 | May 10 | Jul 9 |
| Mentorzone 7a | Apr 26 | Mar 29 | May 10 | Jul 9 |
| Delawarezone 6b | Apr 19 | Mar 22 | May 3 | Jul 2 |
| Strongsvillezone 6b | Apr 20 | Mar 23 | May 4 | Jul 3 |
| Fairfieldzone 6b | Apr 19 | Mar 22 | May 3 | Jul 2 |
| Cleveland Heightszone 6b | Apr 8 | Mar 11 | Apr 22 | Jun 21 |
| Grove Cityzone 6b | Apr 23 | Mar 26 | May 7 | Jul 6 |
| Huber Heightszone 6b | Apr 16 | Mar 19 | Apr 30 | Jun 29 |
| Reynoldsburgzone 6b | Apr 18 | Mar 21 | May 2 | Jul 1 |
| Lancasterzone 6a | Apr 22 | Mar 25 | May 6 | Jul 5 |
What these basil become
What Ohio basil need
Genovese Sweet Basil Seed
The large-leaf, low-anise Italian basil that pesto is defined by. Thai and lemon basils are good plants and wrong ingredients.
Organic Seed Starter Potting MixMust have
Seed-starting mix is not potting soil with a nicer label — it is finer, lighter, and low in nutrients on purpose, because a seedling's first roots want air and moisture, not fertiliser.
T8 Full-Spectrum Grow Lights, 1 ft 4-packMust have
A south window in March delivers a fraction of the light a pepper seedling needs, and the plant tells you by stretching. Two inches of LED above the canopy for 16 hours a day fixes it permanently.
5-Gallon Fabric Grow Bags, 5-Pack
Fabric pots air-prune roots and drain faster than a plastic pot can, which is the entire reason container tomatoes fail. Five gallons is the honest minimum for a pepper; a tomato wants ten.
Ocean Forest Potting SoilMust have
Pre-charged with enough nutrition to carry a transplant for its first month without feeding, which is exactly the window when most container plants stall.
6" Micro-Tip Pruning SnipsMust have
Ninety percent of sauce-garden cutting is snipping a pepper stem or a basil node, and a fine-tipped snip does it better than any pruner. Pulling peppers by hand tears the branch.
Mesh Strainers, Stainless, 3-Count
The last pass before bottling. A fine mesh catches the skin fragments and seed shards that make a hot sauce gritty and clog a woozy bottle's dripper insert.
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Basil in Ohio: questions
When should I plant basil in Ohio?
Transplant around May 8 at the statewide median; across the state that date runs from May 1 in the warmest tenth of Ohio's ZIP codes to May 15 in the coldest. To cut the freeze risk to one year in ten, count from May 10 instead of the median last frost. Use the city table for your own town.
When do I start basil seeds indoors in Ohio?
Around Mar 27 for Genovese Basil: 4 weeks before the statewide median last frost, on soil held at 70–80 °F.
When is the last frost in Ohio?
The ZIP-weighted median of NOAA 1991–2020 station medians is Apr 24. In the warmest tenth of Ohio's ZIP codes the median last frost falls on or before Apr 17; in the coldest tenth, on or after May 1.
When will Ohio basil be ready to harvest?
Genovese Basil planted on the statewide date is ready around Jul 7: 60 days from transplant.
More for Ohio
- When to plant tomatoes
- When to plant peppers
- When to plant tomatillos
- When to plant onions
- When to plant cilantro
- When to plant carrots
- When to plant mustard greens
Basil in every state → · Ohio frost dates → · How frost-date math works →