When to plant · 13 cities · zones 6b–7b
When to plant basil in Pennsylvania
Start Genovese Basil seeds indoors around Mar 30 and transplant around May 11 — the Pennsylvania statewide median, counted from a last spring frost of Apr 27 across 1,833 ZIP codes and 179 NOAA stations.
The rule: Basil is damaged below about 50 °F, well before frost: transplant two weeks after the last frost, not on it.
Pennsylvania basil, by step
Statewide median last frost Apr 27, first fall frost Oct 20, 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 30 | May 11 | Jul 10 | 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 Pennsylvania's ZIP codes resolve to.
Basil in Pennsylvania, 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 |
|---|---|---|---|---|
| Philadelphiazone 7b | Mar 30 | Mar 2 | Apr 13 | Jun 12 |
| Pittsburghzone 6b | Apr 18 | Mar 21 | May 2 | Jul 1 |
| Allentownzone 7a | Apr 20 | Mar 23 | May 4 | Jul 3 |
| Readingzone 7a | Apr 14 | Mar 17 | Apr 28 | Jun 27 |
| Eriezone 7a | Apr 26 | Mar 29 | May 10 | Jul 9 |
| Bethlehemzone 7a | Apr 20 | Mar 23 | May 4 | Jul 3 |
| Scrantonzone 6b | Apr 23 | Mar 26 | May 7 | Jul 6 |
| Lancasterzone 7a | Apr 19 | Mar 22 | May 3 | Jul 2 |
| Harrisburgzone 7a | Apr 15 | Mar 18 | Apr 29 | Jun 28 |
| Yorkzone 7a | Apr 26 | Mar 29 | May 10 | Jul 9 |
| Wilkes-Barrezone 7a | Apr 23 | Mar 26 | May 7 | Jul 6 |
| Altoonazone 6b | Apr 25 | Mar 28 | May 9 | Jul 8 |
| State Collegezone 6b | Apr 20 | Mar 23 | May 4 | Jul 3 |
What these basil become
What Pennsylvania 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 Pennsylvania: questions
When should I plant basil in Pennsylvania?
Transplant around May 11 at the statewide median; across the state that date runs from Apr 28 in the warmest tenth of Pennsylvania's ZIP codes to May 24 in the coldest. To cut the freeze risk to one year in ten, count from May 15 instead of the median last frost. Use the city table for your own town.
When do I start basil seeds indoors in Pennsylvania?
Around Mar 30 for Genovese Basil: 4 weeks before the statewide median last frost, on soil held at 70–80 °F.
When is the last frost in Pennsylvania?
The ZIP-weighted median of NOAA 1991–2020 station medians is Apr 27. In the warmest tenth of Pennsylvania's ZIP codes the median last frost falls on or before Apr 14; in the coldest tenth, on or after May 10.
When will Pennsylvania basil be ready to harvest?
Genovese Basil planted on the statewide date is ready around Jul 10: 60 days from transplant.
More for Pennsylvania
- 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 → · Pennsylvania frost dates → · How frost-date math works →