Tomatillo Seeds – Physalis philadelphica
Physalis philadelphica • Solanaceae (Nightshade) • Native to Mexico, Central America
Tomatillo Seeds grow into branching plants that produce small, husk-covered green fruits with a bright tangy flavor. A great choice for warm-season gardens, salsa recipes, raised beds, and edible landscapes.
Plant Name: Tomatillo Seeds
Quantity: 100
Selected: Tomatillo Seeds / 100
Germination depends on soil, temperature, moisture, and care. See our return policy for details.
At a glance
Tomatillo plants are members of the nightshade family, and all parts of the plant except the ripe fruit are toxic if ingested, so keep children and pets away from the foliage, stems, and unripe husks.
Botanical profile
Meet the Tomatillo – Physalis philadelphica
Step-by-step planting
Growing tomatillos from seed is a rewarding process that moves through a few distinct stages, and giving each stage the right conditions makes a real difference in how well your plants establish and produce.
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1
Start Seeds Indoors
Sow husk tomato seeds indoors 6 to 8 weeks before your last expected frost, pressing them about 1/4 inch deep into a quality seed-starting mix in small cells or pots.
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2
Provide Warm Soil for Germination
Tomatillo seed germination is most reliable when soil temperature stays between 70 and 80 degrees Fahrenheit, so a seedling heat mat is worth using if your home runs cool, and keep in mind that germination results vary depending on soil conditions, moisture levels, and the care you provide.
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3
Keep Seedlings in Full Light
Once sprouts emerge, move them under grow lights or into your sunniest window immediately, because leggy, stretched seedlings from insufficient light rarely recover into strong transplants.
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4
Harden Off Before Transplanting
About a week before moving plants outside, set them in a sheltered outdoor spot for a few hours each day, gradually increasing exposure so they adjust to wind, direct sun, and temperature swings without shock.
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5
Transplant with Proper Tomatillo Spacing
Set tomatillo plants 2 to 3 feet apart in rows spaced at least 3 feet apart, because these are large, sprawling plants that need room to branch and benefit from a cage or stake for support.
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6
Water Consistently, Not Heavily
Tomatillo plant care through the growing season calls for steady, moderate moisture rather than deep infrequent soaks or constant wetness, aiming to keep the soil evenly moist a few inches down without letting it become waterlogged.
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7
Harvest at the Right Time
Tomatillo harvest time has arrived when the husk has turned papery and tan and the fruit inside has filled the husk completely, sometimes splitting it, which is a much more reliable indicator than fruit color alone.
Year-round care
Spring
- Sow after last frost
- prepare soil with compost
Summer
- Water regularly
- feed monthly
Fall
- Harvest before frost
- store well
Winter
- Rest
- store seeds cool and dry
Full specifications
Shipping
- Orders are delivered within 8 to 16 business days.
- All orders include tracking.
- Free shipping on all orders.
- Seeds are packed in moisture-resistant, resealable foil packets.
Germination
Germination rates vary depending on climate, soil conditions, and care. Seeds perform best when planted in the right season at the correct temperature, with consistent moisture and adequate light. We take quality seriously and each batch is tested before packaging. If you have concerns about your seeds, reach out and we will do our best to help.
Frequently asked
Questions about Tomatillo Seeds – Physalis philadelphica
How long do tomatillo seeds take to germinate?
Under warm conditions with soil temperatures around 75 to 80 degrees Fahrenheit, tomatillo seeds often sprout within 7 to 14 days, though this varies depending on seed freshness, moisture consistency, and your specific growing environment. Cooler soil slows germination considerably, and seeds sitting in overly wet mix can rot before they sprout. Patience and stable warmth are your two most useful tools during this stage.
Do tomatillos need two plants to produce fruit?
Yes, this is one of the most important things to understand before you plant. Tomatillos are self-incompatible, meaning a single plant will flower abundantly but set very little fruit without another plant nearby for cross-pollination. Plant at least two, and ideally three or four, to get a productive harvest.
What soil pH is best for tomatillos?
Tomatillos prefer a slightly acidic to neutral soil pH, generally in the range of 6.0 to 7.0. If your soil is outside that range, especially on the acidic side below 5.8, nutrient uptake suffers and plants can look yellow and stressed even when well watered. A simple soil test before planting takes the guesswork out of amending.
Can I grow tomatillos in containers?
It is possible, but tomatillos are large plants and container growing requires some real commitment. Choose a pot that holds at least 15 to 20 gallons per plant, use a rich, well-draining mix, and expect to water more frequently than you would in-ground. Container plants also benefit from a strong cage since they have no surrounding soil to anchor their root spread.
When are tomatillos ready to harvest?
The clearest sign of tomatillo harvest time is when the papery husk has dried out, turned from green to tan or straw-colored, and the fruit inside pushes against or bursts through it. Fruit color varies by variety and is not a reliable harvesting cue on its own. If you pull back the husk and the fruit feels firm and fills the space completely, it is ready.
Are tomatillo plants toxic to pets?
Yes, tomatillo plants belong to the nightshade family (Solanaceae), and the leaves, stems, unripe fruit, and husks contain solanine and related compounds that are toxic to dogs, cats, and other pets. Ripe tomatillo fruit is generally considered the edible portion, but keeping pets out of the garden where these plants grow is a sensible precaution. If you suspect a pet has eaten plant material, contact your veterinarian promptly.
What USDA zones can tomatillos grow in?
Tomatillos are warm-season annuals grown successfully across a wide range of USDA zones, roughly 4 through 11, as long as they are treated as annuals in colder climates and given a frost-free growing season of at least 75 to 100 days. In zones 9 through 11 they can sometimes overwinter or behave as short-lived perennials. Gardeners in shorter-season zones should start seeds indoors early and choose a sheltered, south-facing planting spot to maximize the available warmth.