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Science & Nature • Plant

Tomatillo

Tomatillo is the common name for edible plants in the genus Physalis, especially *Physalis philadelphica* and *Physalis ixocarpa*, which produce small tart fruits enclosed in papery husks.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Tomatillo is the common name for edible plants in the genus Physalis, especially *Physalis philadelphica* and *Physalis ixocarpa*, which produce small tart fruits enclosed in papery husks. Native to Mexico and Central America, it has long been an important crop in Mexican cuisine, especially for salsa verde and other sauces.

Description

Tomatillos are flowering plants in the nightshade family that produce small, tart fruits. The fruits are usually green, though some varieties can appear green-purple or yellow when mature, and they develop inside a papery husk.

Distribution and history

Tomatillos are native to Mexico and Central America and were cultivated in the pre-Columbian era. They have long been part of regional food traditions and are still widely grown in the Americas.

Culinary use

Tomatillo fruit is eaten raw or cooked and is best known as an ingredient in salsa verde. It is also used in soups, sauces, jams, chutneys, and other dishes.

Cultivation

Tomatillos are usually grown as warm-season crops and are commonly treated as annuals in cultivation. They produce fruit enclosed in husks and are harvested when the fruit fills the husk and is firm.

Key facts

  • Tomatillos are closely related to other nightshade crops but are not the same species as tomatoes.
  • The fruit is covered by a thin papery husk that splits as it ripens.
  • Tomatillos were cultivated in pre-Columbian Mesoamerica and remain a staple in Mexican cooking.
  • They are commonly used raw or cooked, especially in salsa verde, soups, jams, and chutneys.
  • The plant is usually grown as an annual in agriculture even though it can be perennial in suitable climates.
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Canadian context

Tomatillos are available in Canadian grocery stores and are grown by some home gardeners in warmer parts of Canada, especially where the growing season is long enough for warm-season crops.

Frequently asked questions

What is a tomatillo?
A tomatillo is a plant in the nightshade family that produces tart edible fruit enclosed in a papery husk.
Is tomatillo the same as a tomato?
No. Tomatillos are a different genus and species from tomatoes, though both belong to the nightshade family.
Where did tomatillos originate?
Tomatillos originated in Mexico and Central America and were cultivated before European contact.
How are tomatillos used in cooking?
They are used raw or cooked, especially in salsa verde, sauces, soups, jams, and chutneys.
Are all parts of the tomatillo plant edible?
No. The ripe fruit is edible, while other parts of the plant are generally regarded as poisonous.

References

  1. Wikipediahttps://en.wikipedia.org/wiki/Tomatillo
    Supports: Common names, botanical identity, native range, culinary use, and general description.
  2. Encyclopaedia Britannicahttps://www.britannica.com/plant/tomatillo
    Supports: Scientific classification, origin, and general uses.
  3. NC State University Plant Toolboxhttps://plants.ces.ncsu.edu/plants/physalis-philadelphica/
    Supports: Family, edibility of ripe fruit, and poisonous nature of other plant parts.
  4. UC Master Gardener Program of Sonoma Countyhttps://ucanr.edu/site/mg-sonoma/tomatillos
    Supports: Difference from tomatoes and botanical identification.
  5. Cornell Universityhttps://bpb-us-e1.wpmucdn.com/blogs.cornell.edu/dist/9/4123/files/2020/01/Davis_Tomatillo-fact-sheet.pdf
    Supports: Native range, pre-Columbian cultivation, and importance in Mexican and Guatemalan cuisines.