When to plant · 29 cities · zones 6a–6b
When to plant tomatillos in Michigan
Start Tomatillo seeds indoors around Mar 22 and transplant around May 10 — the Michigan statewide median, counted from a last spring frost of May 3 across 988 ZIP codes and 196 NOAA stations.
The rule: Six weeks indoors, transplant after the last frost, and give each plant 30 inches and a large cage.
Michigan tomatillos, by step
Statewide median last frost May 3, first fall frost Oct 14, 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 22 | May 10 | Jul 19 | 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 Michigan's ZIP codes resolve to; 4 of 992 ZIPs have no datable freeze and are left out.
Tomatillos in Michigan, 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 |
|---|---|---|---|---|
| Detroitzone 6b | Apr 27 | Mar 16 | May 4 | Jul 13 |
| Grand Rapidszone 6a | Apr 29 | Mar 18 | May 6 | Jul 15 |
| Warrenzone 6b | Apr 21 | Mar 10 | Apr 28 | Jul 7 |
| Sterling Heightszone 6b | Apr 30 | Mar 19 | May 7 | Jul 16 |
| Ann Arborzone 6a | May 5 | Mar 24 | May 12 | Jul 21 |
| Lansingzone 6a | May 1 | Mar 20 | May 8 | Jul 17 |
| Dearbornzone 6b | Apr 27 | Mar 16 | May 4 | Jul 13 |
| Livoniazone 6b | May 1 | Mar 20 | May 8 | Jul 17 |
| Troyzone 6b | Apr 26 | Mar 15 | May 3 | Jul 12 |
| Farmington Hillszone 6a | May 1 | Mar 20 | May 8 | Jul 17 |
| Westlandzone 6b | May 1 | Mar 20 | May 8 | Jul 17 |
| Flintzone 6a | May 3 | Mar 22 | May 10 | Jul 19 |
| Wyomingzone 6a | Apr 29 | Mar 18 | May 6 | Jul 15 |
| Rochester Hillszone 6a | Apr 26 | Mar 15 | May 3 | Jul 12 |
| Southfieldzone 6b | May 1 | Mar 20 | May 8 | Jul 17 |
| Kalamazoozone 6a | Apr 28 | Mar 17 | May 5 | Jul 14 |
| Novizone 6a | May 1 | Mar 20 | May 8 | Jul 17 |
| Pontiaczone 6a | Apr 26 | Mar 15 | May 3 | Jul 12 |
| Taylorzone 6b | Apr 20 | Mar 9 | Apr 27 | Jul 6 |
| Dearborn Heightszone 6b | May 1 | Mar 20 | May 8 | Jul 17 |
| Royal Oakzone 6b | Apr 26 | Mar 15 | May 3 | Jul 12 |
| St. Clair Shoreszone 6b | Apr 29 | Mar 18 | May 6 | Jul 15 |
| Kentwoodzone 6a | Apr 29 | Mar 18 | May 6 | Jul 15 |
| Battle Creekzone 6a | Apr 30 | Mar 19 | May 7 | Jul 16 |
| Portagezone 6a | Apr 28 | Mar 17 | May 5 | Jul 14 |
| East Lansingzone 6a | Apr 28 | Mar 17 | May 5 | Jul 14 |
| Rosevillezone 6b | Apr 29 | Mar 18 | May 6 | Jul 15 |
| Saginawzone 6a | Apr 29 | Mar 18 | May 6 | Jul 15 |
| Midlandzone 6a | Apr 29 | Mar 18 | May 6 | Jul 15 |
What Michigan 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 Michigan: questions
When should I plant tomatillos in Michigan?
Transplant around May 10 at the statewide median; across the state that date runs from May 3 in the warmest tenth of Michigan's ZIP codes to May 30 in the coldest. To cut the freeze risk to one year in ten, count from May 20 instead of the median last frost. Use the city table for your own town.
When do I start tomatillos seeds indoors in Michigan?
Around Mar 22 for Tomatillo: 6 weeks before the statewide median last frost, on soil held at 75–85 °F.
When is the last frost in Michigan?
The ZIP-weighted median of NOAA 1991–2020 station medians is May 3. In the warmest tenth of Michigan's ZIP codes the median last frost falls on or before Apr 26; in the coldest tenth, on or after May 23.
When will Michigan tomatillos be ready to harvest?
Tomatillo planted on the statewide date is ready around Jul 19: 70 days from transplant.
More for Michigan
- 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 → · Michigan frost dates → · How frost-date math works →