Purple Coban Tomatillo

Family: Solanaceae Fruit Vegetable

A velvet hush of flavor begins with Purple Coban Tomatillo: tangy, lightly sweet fruit wrapped in papery husks that deepen to rich purples as they ripen.

Expect a juicy, seed-speckled bite with a bright, citrusy snap—ideal for turning into vivid sauces and salsas, or for roasting to coax out deeper, caramel-tinged notes. Grow this 75-day standout for a long harvest window and a striking garden presence, where the husks become as ornamental as they are useful.

Light: Full SunMaturity: 75 DaysHabit: Indeterminate

Botanical illustration of Purple Coban Tomatillo

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Mar 7th
Last Frost	Apr 25th
Transplant / Sow Outdoors	Jun 20th
Harvest Begins	Sep 3rd
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	75
Sun Requirements	Full Sun
Growth Habit	Indeterminate
Support Needed	Stake
Planting Depth	Deep
Germination Temp (°F)	75
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	10

Culinary Notes

Chef's Note

Purple Coban Tomatillo brings a more velvety, richly purple ripeness with the same sharp, citrusy snap—its juicy, seed-speckled flesh stays lively instead of turning flat. Roast or char it and the acidity softens into caramel-leaning tang, making it ideal for sauces that need to cling to tacos without getting watery.

Best Uses

blistered-to-rough salsa verde with visible tomatillo seeds
roasted tomatillo-chile sauce for tacos and enchiladas
quick-pickled tomatillos for crunchy, puckering bite
charred tomatillo wedges tossed into warm grain bowls

Flavor Profile

bright citrus-tang snap light sweetness balanced by juicy acidity seed-speckled, lightly vegetal fruitiness papery-husk wrapped, jammy when roasted

Kitchen Pairings

chile serrano lime cilantro garlic avocado pork carnitas

Frequently Asked Questions

What’s the most common pest or disease on Physalis philadelphica (Purple Coban tomatillo), and how do I control it?

A frequent problem on tomatillos is early blight (Alternaria), which shows as dark, concentric spots on older leaves that spread upward. Remove and discard infected leaves, water at the base (not on foliage), and apply a copper-based fungicide labeled for edible Solanaceae when you first see spots and repeat per label timing. Watch for aphids as well—knock them off with water and use insecticidal soap if numbers build up, because their feeding can also weaken plants.

How often should I water Purple Coban tomatillo during the main growing phase?

During active growth and fruit swelling (roughly weeks 4–10 after transplant), keep soil consistently evenly moist but not waterlogged. Water deeply about 1–2 times per week depending on heat, aiming for the top 1–2 inches to dry slightly between waterings. Inconsistent moisture can lead to stress and poor fruit set, so use mulch and avoid frequent shallow watering.

How can I tell when Physalis philadelphica fruit is ready to harvest?

Harvest when the papery husks (calyx) fill out and turn from green to their mature color, and the fruit underneath feels firm. In the last stretch toward maturity (~75 days), husks should look dry and slightly papery rather than tightly green and thick. If you can easily pick the fruit from the plant with the husk intact and it’s no longer hard/green inside, it’s ready.