Plant Profile

TomatilloPhysalis philadelphica

The tomatillo is a heat-loving fruiting vegetable from the nightshade family, known for its tart fruits enclosed in a papery husk. Ideal for salsas and sauces.

Fruit vegetablesNightshade family
Calendar
Tomatillo (Physalis philadelphica): plant portrait - Fruit vegetables, Nightshade family, Harvest July - October
Tomatillo: plant portrait. harvest: July - October.

Quick profile

Key data

Growing calendar
JanFebMarAprMayJunJulAugSepOctNovDec
Indoor sowing
Planting outdoors
Harvest
Indoor sowingPlanting outdoorsHarvest

Suitable growing locations:

Outdoor garden bedRaised bedContainerBalconyGreenhouse

Good neighbors

Marigolds (Tagetes)NasturtiumsCarrotsOnions

Avoid

FennelTomatoesPotatoes

Indoor & direct sowing

Tomatillo: Sowing and germination

Indoor sowing

Tomatillos require a long growing season and are frost-sensitive. Therefore, indoor pre-cultivation is essential.

Direct sowing outdoors

Direct outdoor sowing is not recommended in Central Europe due to frost sensitivity and the need for warmth.

Seed depth0.5 - 1 cm
Germination temp20 - 25 °C
Germination time7 - 14 days
Light germinatorNo
Dark germinatorNo
Cold germinatorNo
Stratification neededNo
Pre-soaking recommendedNo

Planting & site

Tomatillo: Planting and spacing

Planting outdoors

Plant out only after the last frosts, when the soil has warmed sufficiently (mid-May to early June).

Plant spacing60 - 80 cm
Row spacing80 - 100 cm
Plants per m²1 - 2 per m²
Bed widthfrom 80 cm

Temperature & frost

Tomatillo: Temperature and site

Growing temperaturefrom 10 °C
Optimal temperature20 - 28 °C
Max. heatup to 35 °C
Soil temperature18 - 22 °C
Frost sensitiveYes
Late frost sensitiveYes
Heat tolerancehigh
Cold tolerancevery low

Water & nutrients

Tomatillo: Water, nutrients and care

Watermedium
Critical water phasesFlowering, Fruit set, Fruit development
Watering methodDrip irrigation
Droughtmedium
Waterlogging sensitiveYes
Mulching recommendedYes
Nutrient needheavy feeder
Compost recommendedYes
Fertilizer sensitivitymedium

Container & growth

Tomatillo: Container, support and growth

Container suitableYes
Pot sizeVolume: from 20 l; Recommended: from 30 l; Diameter: from 30 cm; Depth: from 30 cm
SupportYes; 80 - 150 cm
Height60 - 150 cm
Width60 - 100 cm
Root depth30 - 60 cm
Root spread30 - 50 cm
Yield1 - 3 kg

Year plan

Tomatillo Calendar

Plants

Indoor pre-cultivation in spring is crucial, as tomatillos require a long, warm growing season and are extremely frost-sensitive.

Year overview
JanFebMarAprMayJunJulAugSepOctNovDec
Indoor sowing
Planting outdoors
Harvest

Relevant now

June

  • Plant out to gardenafter last frost, soil warm: Plant with sufficient spacing (60-80 cm) and water well. Install supports.
  • Water regularlydry weather: Ensure consistent moisture, especially after planting out.

Next up

July

  • Support plantsplants growing tall: Bushy plants often require additional stakes or cages.
  • First harvesthusks split: Harvest first ripe fruits when the husk splits and the fruit underneath is firm.
  • Fertilizefirst fruit set: Apply a balanced liquid fertilizer or compost tea.
  • Water regularlydry weather, fruit development: Water requirements are high during fruit development.

Monthly tasks

Single tasks from monthly data; repeated seasonal windows are shown in the overview above.

Direct sowingPlantingHarvestGrowing

January

Quiet month

February

Quiet month

March

Pre-cultivate indoors

Direct sowing

  • Pre-cultivate indoorswarm, bright location: Sow seeds 0.5-1 cm deep in seed-starting mix, germinate at 20-25°C.

April

Continue indoor pre-cultivation

Direct sowing

  • Continue indoor pre-cultivationwarm, bright location: Place young plants in a bright, warm spot; prick out if necessary.

May

Harden off plantsPrepare garden bed

Planting

  • Harden off plantsno frost risk: Gradually acclimate plants to outdoor temperatures and sun.

Growing

  • Prepare garden bedsoil workable: Loosen soil and enrich with compost.

June

Plant out to gardenWater regularly

Planting

  • Plant out to gardenafter last frost, soil warm: Plant with sufficient spacing (60-80 cm) and water well. Install supports.

Growing

  • Water regularlydry weather: Ensure consistent moisture, especially after planting out.

July

Support plantsFirst harvestFertilizeWater regularly

Planting

  • Support plantsplants growing tall: Bushy plants often require additional stakes or cages.

Harvest

  • First harvesthusks split: Harvest first ripe fruits when the husk splits and the fruit underneath is firm.

Growing

  • Fertilizefirst fruit set: Apply a balanced liquid fertilizer or compost tea.
  • Water regularlydry weather, fruit development: Water requirements are high during fruit development.

August

Support plantsMain harvestFertilizeWater regularly

Planting

  • Support plantsheavy fruit load: Provide additional support for heavy, fruit-laden branches.

Harvest

  • Main harvesthusks split: Harvest ripe fruits regularly to encourage further production.

Growing

  • Fertilizeongoing fruiting: Continue fertilizing every 2-4 weeks.
  • Water regularlydry weather, fruit development: Consistent moisture is crucial for good yields.

September

Continue harvestReduce watering

Harvest

  • Continue harvesthusks split: Harvest for as long as possible, until the first frost threatens.

Growing

  • Reduce wateringcooler weather: Check water needs in cooler temperatures and reduce watering.

October

Last harvest before frostClear garden bed

Harvest

  • Last harvest before frostfirst frost imminent: Harvest all remaining fruits before the first frost. Unripe fruits can ripen indoors.

Growing

  • Clear garden bedafter harvest: Remove plant debris and prepare the bed for the next season.

November

Quiet month

December

Quiet month

Flowering & pollination

Tomatillo Flowering & pollination

Flowering period

Mid-summer to autumn (July to October)

Flower type

Bell-shaped, small

Flower color

Yellow with a dark center

Self-fertility

self-incompatible

Pollinator needed

yes

Overview

Tomatillos are self-incompatible and require cross-pollination for good fruit set. At least two plants should be grown.

Notes

The flowers are rather inconspicuous and are located in the leaf axils. They are pollinated by insects.

Companion guide

Tomatillo Companion guide

Companion guide

Good neighbors

Marigolds (Tagetes)NasturtiumsCarrotsOnions

Avoid

FennelTomatoesPotatoes

Use & storage

Tomatillo Use & storage

Harvest

Harvest begins in mid-summer and continues until the first frost. Fruits are ripe when the husk splits or changes color.

Storage

Cool and dry

Storage life

With husk at room temperature 2-3 weeks, in the refrigerator up to 2 months. Shorter without husk.

Flavor

Tart, slightly citrusy, fresh, sometimes slightly resinous

Harvest

Harvest begins in mid-summer and continues until the first frost. Fruits are ripe when the husk splits or changes color.

Processing

Freezing (whole or pureed)Canning (salsa, sauces)Drying (rarely)

After harvest

Harvest the fruits with their husks. The husk protects the fruit and extends its shelf life. Before use, remove the husk and wash off the sticky residue.

Notes

The sticky residue on the fruit after removing the husk is normal and should be washed off before use.

Edibility & safety

Tomatillo Edibility & safety

For people

In brief: which parts are edible, which parts remain risky, and whether raw consumption makes sense.

Edible parts:Ripe fruit
Caution parts:Husk (calyx), Unripe fruits, Leaves, Stems
Raw consumption:Ripe fruits can be consumed raw.

Safety notes

Like other nightshades, unripe fruits, leaves, and stems contain solanine-like alkaloids, which are toxic in larger quantities. Consume only ripe fruits.

Animal safety

This plant is not simply safe or unsafe for animals. 14 animal types have restrictions, so quantity, access, and plant part matter.

Animal safety by plant part

Each row shows which parts are more suitable and which parts are critical.

Companion animals

Dog icon for animal safety ratingDog

Ripe fruit

Unripe fruits, Leaves, Stems

Risk factors

Consumption of unripe plant parts, Overconsumption of ripe fruit

Symptoms

Vomiting, Diarrhea, Gastrointestinal upset

observe

Ripe tomatillo fruits are suitable for dogs in small amounts as a treat. Unripe fruits, leaves, stems, and husk contain solanine-like alkaloids that can cause gastrointestinal upset. If toxic parts are ingested, consult a veterinarian.

Open animal page
Cat icon for animal safety ratingCat

Ripe fruit

Husk (calyx), Unripe fruits, Leaves

Risk factors

Consumption of unripe plant parts, Overconsumption

Symptoms

Vomiting, Gastrointestinal upset

contact a vet if symptoms appear

Ripe tomatillo fruits are suitable for cats in small amounts as a treat. Unripe fruits, leaves, stems, and husk contain solanine-like alkaloids that may cause gastrointestinal upset. Feed only ripe fruit and limit quantity.

Open animal page
Rabbit icon for animal safety ratingRabbit

ripe fruit

unripe fruits, leaves, stems

Risk factors

consumption of unripe parts, overconsumption of ripe fruit

Symptoms

gastrointestinal upset, diarrhea

observe

Ripe tomatillo fruits are suitable for rabbits in small amounts as an occasional treat, but contain solanine-like alkaloids in unripe parts and may cause gastrointestinal upset if overfed. Feed only ripe fruit, avoid leaves, stems, and husk.

Open animal page
Guinea pig icon for animal safety ratingGuinea pig

ripe fruit

unripe fruits, leaves, stems

Risk factors

consumption of unripe plant parts, overconsumption

Symptoms

gastrointestinal upset, vomiting, diarrhea

observe

Ripe tomatillo fruits are suitable for guinea pigs in small amounts as a treat and provide vitamin C. Unripe fruits, leaves, stems, and husk contain solanine-like alkaloids that can cause gastrointestinal upset. Feed only ripe fruit.

Open animal page
Hamster icon for animal safety ratingHamster

ripe fruit

unripe fruits, leaves, stems

Risk factors

consumption of unripe parts, overconsumption of ripe fruit

Symptoms

gastrointestinal upset, vomiting, diarrhea

observe

No direct species-specific source was found for hamsters. This is a cautious inference from the rabbits profile and the known plant-part risks.

Open animal page
Budgie icon for animal safety ratingBudgie

Ripe fruit

Husk (calyx), Unripe fruits, Leaves

Risk factors

Consumption of unripe parts, Overconsumption

Symptoms

Gastrointestinal upset, Vomiting, Diarrhea

contact a vet if symptoms appear

Ripe tomatillo fruits are suitable for budgies in small amounts as an occasional treat. All other plant parts contain toxic alkaloids and must be avoided. If toxic parts are ingested, monitor for symptoms and consult a veterinarian if they occur.

Open animal page

Farm animals

Horse icon for animal safety ratingHorse

Ripe fruit

Unripe fruits, Leaves, Stems

Risk factors

Consumption of unripe plant parts, Overconsumption of ripe fruits

Symptoms

Gastrointestinal upset, Vomiting, Diarrhea

observe

Ripe tomatillo fruits are suitable for horses in small amounts as an occasional treat, but like other nightshades contain solanine-like alkaloids in unripe parts and may cause gastrointestinal upset if overconsumed. Leaves, stems, unripe fruits, and husk are toxic and should be avoided.

Open animal page
Chicken icon for animal safety ratingChicken

Ripe fruit

Unripe fruits, Leaves, Stems

Risk factors

Consumption of unripe plant parts, Overconsumption of ripe fruits

Symptoms

Gastrointestinal upset, Vomiting, Diarrhea

observe

Ripe tomatillo fruits are suitable for chickens in small amounts as a treat. Unripe fruits, leaves, stems, and husk contain solanine-like alkaloids and should be avoided. If toxic parts are ingested, observe and contact vet if symptoms appear.

Open animal page
Duck icon for animal safety ratingDuck

Ripe fruit

Husk (calyx), Unripe fruits, Leaves

Risk factors

Consumption of unripe plant parts, Overconsumption of ripe fruit

Symptoms

Gastrointestinal upset, Vomiting, Diarrhea

observe

Ripe tomatillo fruit is suitable for ducks in small amounts as an occasional treat. Unripe fruits, leaves, stems, and husk contain solanine-like alkaloids and should be avoided. If toxic parts are ingested, observe and consult a veterinarian if symptoms persist.

Open animal page
Goose icon for animal safety ratingGoose

Ripe fruit

Husk (calyx), Unripe fruits, Leaves

Risk factors

Consumption of unripe plant parts, Overconsumption of ripe fruit

Symptoms

Gastrointestinal upset, Vomiting, Diarrhea

observe

Ripe tomatillo fruits are suitable for geese in small amounts as an occasional treat. All other plant parts contain toxic alkaloids and must be avoided. If toxic parts are ingested, observe for symptoms and consult a veterinarian if symptoms persist.

Open animal page
Sheep icon for animal safety ratingSheep

ripe fruit

unripe fruits, leaves, stems

Risk factors

consumption of unripe plant parts, overconsumption

Symptoms

gastrointestinal upset, vomiting, diarrhea

contact a vet if symptoms appear

No reliable species-specific assessment is available.

Open animal page
Goat icon for animal safety ratingGoat

ripe fruit

unripe fruits, leaves, stems

Risk factors

consumption of unripe plant parts, overconsumption

Symptoms

gastrointestinal upset, vomiting, diarrhea

contact a vet if symptoms appear

No direct species-specific source was found for goats. This is a cautious inference from the sheep profile and the known plant-part risks.

Open animal page
Cattle icon for animal safety ratingCattle

ripe fruit

unripe fruits, leaves, stems

Risk factors

consumption of unripe plant parts, overconsumption

Symptoms

gastrointestinal upset, vomiting, diarrhea

contact a vet if symptoms appear

No direct species-specific source was found for cattle. This is a cautious inference from the sheep profile and the known plant-part risks.

Open animal page
Pig icon for animal safety ratingPig

Ripe fruit

Unripe fruits, Leaves, Stems

Risk factors

Consumption of unripe plant parts, Overconsumption

Symptoms

Gastrointestinal upset, Vomiting, Diarrhea

observe

Ripe tomatillo fruits are suitable for pigs in small amounts as an occasional treat. Unripe fruits, leaves, and stems contain solanine-like alkaloids that may cause gastrointestinal upset if consumed excessively. Feed only ripe fruits.

Open animal page

These guidelines are for general information only and do not replace veterinary diagnosis. If critical plant parts were ingested or the animal shows unusual behaviour or symptoms, seek veterinary advice.

Max risk

unknown

Highest status

selected parts only

Urgency

contact a vet if symptoms appear

Saving seed

Tomatillo Saving seed

Seed viability

4 - 6 years

Notes

To obtain true-to-type seeds, adequate isolation from other tomatillo varieties or related Physalis species is required. Seeds can be cleaned by fermentation, similar to tomato seeds, to improve germination.

Practical tips

Tomatillo Practical tips

Common beginner mistakes

Planting out too early, leading to frost damage.Growing only one tomatillo plant, resulting in poor pollination and fruit set.Inadequate support for the bushy plants, causing branches to break under the weight of the fruits.Insufficient fertilizer or inconsistent watering, which reduces yield.

Success pattern

Indoor pre-cultivation from March/April at warm temperatures.Planting out after the last frosts (mid-May) in a sunny, sheltered location or greenhouse.Installing supports (stakes, cages) immediately after planting out.Regular and consistent watering, along with balanced fertilization, especially during fruit development.Growing at least two plants to ensure cross-pollination.

High-impact tips

Mulch the soil to retain moisture and suppress weeds.Install supports early, before plants grow too large and collapse.Always plant at least two tomatillo plants to ensure good fruit set.Harvest regularly to encourage the plant to produce more.

Grower observations

Tomatillos are surprisingly productive when they get enough warmth and sun. Greenhouse yields are often highest.The husks are a great indicator of ripeness. When they split, it's time to harvest!You really need at least two plants for a good harvest, otherwise the flowers remain unpollinated.

Plant Profile

Additional plant images

Tomatillo (Physalis philadelphica): whole plant for plant portrait - Fruit vegetables, Nightshade family, Harvest July

Health

Pests, Diseases

Plant health

AphidsWhitefliesSpider mitesEarly blightPowdery mildewFusarium wiltNitrogen deficiencyPhosphorus deficiencyPotassium deficiencyPoor fruit setFruit drop

Diagnosis help

Tomatillo Diagnosis help

Pest groups

Sucking insects (Aphids, Whiteflies, Spider Mites)

Disease groups

Fungal diseases (Early Blight, Powdery Mildew, Wilts)

Prevention

Practice crop rotation to avoid soil-borne diseases.Ensure adequate plant spacing for good air circulation.Provide consistent watering, avoid waterlogging and wetting foliage.Enrich soil with compost and organic matter for healthy plants.Regularly inspect for pests and diseases to intervene early.Strengthen plants through balanced fertilization and optimal site conditions.

Diagnosis

When problems arise, first check growing conditions (water, nutrients, site), as many symptoms are due to stress.

Cultural prevention

Practice crop rotation with non-nightshade crops.Ensure adequate plant spacing for good ventilation.Mulch to reduce soil splash and regulate moisture.Water plants at the base to avoid wetting foliage.Remove and destroy plant debris after harvest.

Monitoring

Regular inspection of plants, especially leaf undersides and older leaves.Look for first signs of spots, discoloration, or coatings.

First response

Immediately remove and dispose of affected plant parts in household waste (do not compost).For light infestations, treat with organic sprays (e.g., neem oil, horsetail tea, milk-water mixture).

Diagnostic rules

Dark spots with concentric rings on older leaves, often with a yellow halo.

Possible causes: Early blight

  • Check humidity and temperature history
  • Check plant spacing and ventilation

White, powdery coating on upper and lower leaf surfaces.

Possible causes: Powdery mildew

  • Improve air circulation
  • Remove affected leaves

FAQ

Do tomatillos need support?

Yes, tomatillos grow bushy and can collapse under the weight of their fruits. Support with stakes, cages, or a trellis is advisable to keep the plants upright and the fruits off the ground.

Why do tomatillo husks split?

The splitting of the papery husk is a normal sign of ripeness in tomatillos. It indicates that the fruit inside has reached its full size and is ready for harvest. However, inconsistent watering can also promote this prematurely.

Can you eat tomatillos raw?

Yes, ripe tomatillos can be eaten raw, for example in salads or salsas. However, unripe fruits, leaves, and stems contain solanine-like alkaloids and should not be consumed.

What is the best way to store tomatillos?

Ripe tomatillos are best stored cool and dry with their husks. At room temperature, they last about 2-3 weeks; in the refrigerator, up to 2 months. Before use, remove the husk and wash off the sticky residue.

Why aren't my tomatillos producing fruit?

Tomatillos are self-incompatible and require cross-pollination. The most common reason for poor fruit set is growing only one plant or insufficient pollinators. Plant at least two tomatillos and attract bees.

Is Tomatillo safe for Dog?

Tomatillo is classified as selected parts only for Dog. Risk: unknown. Urgency: observe. Ripe tomatillo fruits are suitable for dogs in small amounts as a treat. Unripe fruits, leaves, stems, and husk contain solanine-like alkaloids that can cause gastrointestinal upset. If toxic parts are ingested, consult a veterinarian.

Is Tomatillo safe for Cat?

Tomatillo is classified as selected parts only for Cat. Risk: unknown. Urgency: contact a vet if symptoms appear. Ripe tomatillo fruits are suitable for cats in small amounts as a treat. Unripe fruits, leaves, stems, and husk contain solanine-like alkaloids that may cause gastrointestinal upset. Feed only ripe fruit and limit quantity.

Is Tomatillo safe for Rabbit?

Tomatillo is classified as selected parts only for Rabbit. Risk: unknown. Urgency: observe. Ripe tomatillo fruits are suitable for rabbits in small amounts as an occasional treat, but contain solanine-like alkaloids in unripe parts and may cause gastrointestinal upset if overfed. Feed only ripe fruit, avoid leaves, stems, and husk.

Is Tomatillo safe for Guinea pig?

Tomatillo is classified as selected parts only for Guinea pig. Risk: unknown. Urgency: observe. Ripe tomatillo fruits are suitable for guinea pigs in small amounts as a treat and provide vitamin C. Unripe fruits, leaves, stems, and husk contain solanine-like alkaloids that can cause gastrointestinal upset. Feed only ripe fruit.

Guides

Related guides

Garden guides

Sources

Public sources

  1. Wikidata entity

    Wikidata · 2026-05-15

  2. GBIF species match

    GBIF · 2026-05-15

  3. Deutschsprachige Wikipedia: Tomatillo

    Wikipedia · 2026-05-15

  4. English Wikipedia: Tomatillo

    Wikipedia · 2026-05-15

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