When to plant · 13 cities · zones 6b–7b
When to plant tomatillos in Pennsylvania
Start Tomatillo seeds indoors around Mar 16 and transplant around May 4 — the Pennsylvania statewide median, counted from a last spring frost of Apr 27 across 1,833 ZIP codes and 179 NOAA stations.
The rule: Six weeks indoors, transplant after the last frost, and give each plant 30 inches and a large cage.
Pennsylvania tomatillos, 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 |
|---|---|---|---|---|
| TomatilloToma Verde | Mar 16 | May 4 | Jul 13 | 70 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.
Tomatillos in Pennsylvania, city by city
Tomatillo, 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 | Feb 16 | Apr 6 | Jun 15 |
| Pittsburghzone 6b | Apr 18 | Mar 7 | Apr 25 | Jul 4 |
| Allentownzone 7a | Apr 20 | Mar 9 | Apr 27 | Jul 6 |
| Readingzone 7a | Apr 14 | Mar 3 | Apr 21 | Jun 30 |
| Eriezone 7a | Apr 26 | Mar 15 | May 3 | Jul 12 |
| Bethlehemzone 7a | Apr 20 | Mar 9 | Apr 27 | Jul 6 |
| Scrantonzone 6b | Apr 23 | Mar 12 | Apr 30 | Jul 9 |
| Lancasterzone 7a | Apr 19 | Mar 8 | Apr 26 | Jul 5 |
| Harrisburgzone 7a | Apr 15 | Mar 4 | Apr 22 | Jul 1 |
| Yorkzone 7a | Apr 26 | Mar 15 | May 3 | Jul 12 |
| Wilkes-Barrezone 7a | Apr 23 | Mar 12 | Apr 30 | Jul 9 |
| Altoonazone 6b | Apr 25 | Mar 14 | May 2 | Jul 11 |
| State Collegezone 6b | Apr 20 | Mar 9 | Apr 27 | Jul 6 |
What Pennsylvania tomatillos need
Toma Verde Tomatillo SeedMust have
Salsa verde is not a green tomato sauce — it is a tomatillo sauce, and the difference is the tartness and the natural pectin that makes it cling. There is no substitute.
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.
Seedling Heat Mat + Digital ThermostatMust have
Peppers germinate on soil temperature, not air temperature. At 65 °F a habanero takes a month and half of them rot; at 85 °F it is up in eight days. The thermostat is the half that matters.
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.
Organic Tomato-Tone 3-4-6 with 8% CalciumMust have
The NPK ratio is the point: low nitrogen, higher potassium. Feed a tomato a high-nitrogen lawn fertiliser and you get a magnificent six-foot plant with four tomatoes on it.
58" Square Tomato Cages, 3-PackMust have
The conical wire tomato ring from the hardware store is 33 inches tall and an indeterminate San Marzano will laugh at it in July. Height and square geometry are what actually hold a loaded plant.
Garden Harvest Basket with Tool Caddy
A harvest basket that doubles as a colander means the hose rinse happens in the garden, and the dirt stays outside. On a 20-pound tomato day that is a genuine time saving.
Stainless Steel Food Mill, 3 discsMust have
A blender pulverises tomato skins and seeds into the sauce, which is where bitterness comes from. A mill separates them out — no blanching, no peeling, no ice bath. It removes an entire hour from sauce day.
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Tomatillos in Pennsylvania: questions
When should I plant tomatillos in Pennsylvania?
Transplant around May 4 at the statewide median; across the state that date runs from Apr 21 in the warmest tenth of Pennsylvania's ZIP codes to May 17 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 tomatillos seeds indoors in Pennsylvania?
Around Mar 16 for Tomatillo: 6 weeks before the statewide median last frost, on soil held at 75–85 °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 tomatillos be ready to harvest?
Tomatillo planted on the statewide date is ready around Jul 13: 70 days from transplant.
More for Pennsylvania
- When to plant tomatoes
- When to plant peppers
- When to plant basil
- When to plant onions
- When to plant cilantro
- When to plant carrots
- When to plant mustard greens
Tomatillos in every state → · Pennsylvania frost dates → · How frost-date math works →