Calico Corn

Family: Poaceae Grain Vegetable

Planting Schedule

Provide your location or planting zone to unlock dates and add Calico Corn to a garden.

Wake to a feast of color in the garden: Calico Corn ripens into jewel-toned ears where creamy kernels blush through warm butter, rose-gold, and deep ember-red in painterly streaks.

The kernels are plump and firm with a crisp, satisfying bite, making each ear a striking centerpiece for autumn displays and seasonal arrangements. Grow Calico Corn for its bold, ornamental presence—an easy way to add vivid texture and lasting visual drama to your landscape at peak maturity.

Light: Full SunMaturity: 70 DaysHabit: Upright

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Calico Corn Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Protected Environment Only
Zone 1b	Protected Environment Only
Zone 2a	Direct Sow	May 25th	Aug 3rd – Aug 29th
Zone 2b	Direct Sow	May 15th	Jul 24th – Aug 25th
Zone 3a	Direct Sow	May 15th	Jul 24th – Sep 1st
Zone 3b	Direct Sow	May 19th	Jul 28th – Sep 21st
Zone 4a	Direct Sow	May 15th	Jul 24th – Sep 24th
Zone 4b	Direct Sow	May 13th	Jul 22nd – Sep 27th
Zone 5a	Direct Sow	May 8th	Jul 17th – Sep 30th
Zone 5b	Direct Sow	May 4th	Jul 13th – Oct 5th
Zone 6a	Direct Sow	May 1st	Jul 10th – Oct 10th
Zone 6b	Direct Sow	Apr 25th	Jul 4th – Oct 16th
Zone 7a	Direct Sow	Apr 20th	Jun 29th – Oct 20th
Zone 7b	Direct Sow	Apr 10th	Jun 19th – Oct 28th
Zone 8a	Direct Sow	Apr 1st	Jun 10th – Nov 5th
Zone 8b	Direct Sow	Mar 23rd	Jun 1st – Nov 12th
Zone 9a	Direct Sow	Mar 6th	May 15th – Nov 26th
Zone 9b	Direct Sow	Feb 9th	Apr 20th – Dec 9th
Zone 10a	—	Oct 1st	Dec 10th – Feb 28th
Zone 10b	—	Oct 1st	Dec 10th – Feb 28th
Zone 11a	—	Oct 1st	Dec 10th – Feb 28th
Zone 11b	—	Oct 1st	Dec 10th – Feb 28th
Zone 12a	—	Oct 1st	Dec 10th – Feb 28th
Zone 12b	—	Oct 1st	Dec 10th – Feb 28th
Zone 13a	—	Oct 1st	Dec 10th – Feb 28th
Zone 13b	—	Oct 1st	Dec 10th – Feb 28th

Crop Details

Trait	Value
Days to Maturity	70
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	60
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Even if it shows off like an ornamental, Calico Corn eats like sweet corn should: plump, juicy kernels with a crisp bite that holds up to high heat. It’s the kind of ear that turns into a centerpiece—then disappears off the plate once you hit it with butter, salt, and a little smoke.

Best Uses

char-grilled or blistered corn-on-the-cob with lime and salt
quick sauté of kernels for taco fillings and succotash-style plates
creamy corn chowder where firm kernels don’t turn to mush
corn salsa with crunchy texture (serve cold or room temp)

Flavor Profile

sweet, creamy kernel core crisp, juicy bite gentle corn-grain nuttiness buttery finish with a floral-starchy sweetness

Kitchen Pairings

lime chili powder cotija cheese cilantro butter smoked paprika

Frequently Asked Questions

What pest is most likely to hit sweet corn (Zea mays var. saccharata) and how do I stop it?

Watch for corn earworm/bollworm, which leaves frass at the tip of developing ears. When silks are fresh (about 1–3 days after they emerge), apply an earworm-targeted control such as Bt (bacillus thuringiensis) that’s labeled for caterpillars, and reapply as directed. Also remove and discard badly damaged ears early so larvae don’t move to neighboring plants.

How often should I water calico sweet corn during the main growing phase?

During the rapid growth and tassel-to-silk period, keep soil evenly moist—aim for about 1 to 1.5 inches (2.5–3.8 cm) of water per week, split across 2–3 deep waterings if it’s hot. Sweet corn is sensitive to drought stress during silk emergence and ear development; if the top inch of soil dries out repeatedly, yields and kernel fill drop. Use mulch to reduce swings in soil moisture, and avoid soaking leaves late in the day to limit disease.

How can I tell when calico sweet corn is ready to harvest (Zea mays var. saccharata)?

Harvest when silks have browned and dried, but before they fully rot—typically about 18–22 days after silking for sweet corn. The best test is the kernel “milk stage”: press a kernel with your thumbnail; if it releases milky liquid and the kernel feels tender, it’s ready. For peak sweetness, pick in the morning and refrigerate promptly.