When to plant · 26 cities · zones 6a–10a

When to plant tomatillos in Arizona

Start Tomatillo seeds indoors around Jan 7 and transplant around Feb 25 — the Arizona statewide median, counted from a last spring frost of Feb 18 across 413 ZIP codes and 148 NOAA stations.

Jan 7Start indoors6 weeks before last frost
Feb 25Plant outJan 14 – May 22 across the state
Feb 18Last spring frostmedian · 1 in 10 years after Mar 11
May 6First harvest70 days from transplant

The rule: Six weeks indoors, transplant after the last frost, and give each plant 30 inches and a large cage.

Arizona tomatillos, by step

Statewide median last frost Feb 18, first fall frost Dec 1, 2027 season. Each cultivar's own indoor lead time and days to maturity, same engine as the Plan Builder.

CultivarStart indoorsPlant outFirst harvestDays
TomatilloToma VerdeJan 7Feb 25May 670 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 Arizona's ZIP codes resolve to; 3 of 416 ZIPs have no datable freeze and are left out.

Tomatillos in Arizona, city by city

Tomatillo, scheduled from each city's nearest NOAA station — the same dates as its frost page.

CityLast frostStart indoorsPlant outFirst harvest
Phoenixzone 9bJan 8Nov 27Jan 15Mar 26
Tucsonzone 9bFeb 5Dec 25Feb 12Apr 23
Mesazone 9bFeb 1Dec 21Feb 8Apr 19
Gilbertzone 9bFeb 1Dec 21Feb 8Apr 19
Chandlerzone 9bFeb 1Dec 21Feb 8Apr 19
Glendalezone 9bJan 20Dec 9Jan 27Apr 7
Scottsdalezone 10aJan 27Dec 16Feb 3Apr 14
Peoriazone 9bFeb 5Dec 25Feb 12Apr 23
Tempezone 10aFeb 13Jan 2Feb 20May 1
Surprisezone 9bFeb 5Dec 25Feb 12Apr 23
Goodyearzone 9bJan 7Nov 26Jan 14Mar 25
Buckeyezone 9bJan 7Nov 26Jan 14Mar 25
Yumazone 10afrost rareDec 20Feb 7Apr 18
Avondalezone 9bJan 7Nov 26Jan 14Mar 25
Queen Creekzone 9bFeb 1Dec 21Feb 8Apr 19
Flagstaffzone 6aJun 4Apr 23Jun 11Aug 20
Maricopazone 9aFeb 23Jan 12Mar 2May 11
Casa Grandezone 9aFeb 5Dec 25Feb 12Apr 23
Maranazone 9bApr 2Feb 19Apr 9Jun 18
Lake Havasu Cityzone 10aJan 5Nov 24Jan 12Mar 23
Prescott Valleyzone 7bApr 30Mar 19May 7Jul 16
Oro Valleyzone 9aApr 2Feb 19Apr 9Jun 18
Prescottzone 7bApr 30Mar 19May 7Jul 16
Sierra Vistazone 8bApr 18Mar 7Apr 25Jul 4
Apache Junctionzone 9bFeb 1Dec 21Feb 8Apr 19
Bullhead Cityzone 10aJan 4Nov 23Jan 11Mar 22

What Arizona tomatillos need

SeedsThe cultivar decides the sauce. Everything downstream is damage control.
  • 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.

StartSoil temperature and light intensity, indoors, weeks before your frost date.
  • 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.

GrowRoot volume, nutrition and structure. Where most home crops actually fail.
  • 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.

HarvestTiming, handling, and weighing what you actually got.
  • 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.

CookReduction, texture, and the non-reactive pans that keep tomato tasting like tomato.
  • 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 Arizona: questions

When should I plant tomatillos in Arizona?

Transplant around Feb 25 at the statewide median; across the state that date runs from Jan 14 in the warmest tenth of Arizona's ZIP codes to May 22 in the coldest. To cut the freeze risk to one year in ten, count from Mar 11 instead of the median last frost. Use the city table for your own town.

When do I start tomatillos seeds indoors in Arizona?

Around Jan 7 for Tomatillo: 6 weeks before the statewide median last frost, on soil held at 75–85 °F.

When is the last frost in Arizona?

The ZIP-weighted median of NOAA 1991–2020 station medians is Feb 18. In the warmest tenth of Arizona's ZIP codes the median last frost falls on or before Jan 7; in the coldest tenth, on or after May 15.

When will Arizona tomatillos be ready to harvest?

Tomatillo planted on the statewide date is ready around May 6: 70 days from transplant.

More for Arizona

Tomatillos in every state → · Arizona frost dates → · How frost-date math works →