VegetableCorn
Japanese Hulless Corn
Japanese Hulless Corn is a heritage popcorn variety that delivers genuinely nutty, flavorful kernels without the papery hulls that typically stick between your teeth. Once known as Australian Hulless, this open-pollinated heirloom grows 4 to 5 feet tall and produces 3 to 6 ears per stalk, each about 4 inches long. It reaches harvest maturity in 86 days and thrives in heat and drought-prone regions, making it surprisingly resilient for a popcorn variety. Hardy across zones 2 through 13, it's equally at home in northern gardens and southern heat.
Photo © True Leaf Market
Growing Conditions
USDA Zone
2-13
Sunlight
Full Sun
Water
Moderate
Soil
Well-drained, Fertile Loam With Organic Matter
Growth Stats
84 in
Height
TypeUpright
Spacing
10
Plant Profile
Sunlight
Full Sun
Water
Moderate
Zones
2-13
Size
84in H x ?in W
Growth
—
Care
High
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Highlights
The hulless kernels are the real draw here; when this corn pops, you get tender, crisp popcorn without the annoying shell fragments that ruin the texture. It's a true heirloom with genuine flavor depth, nutty and complex rather than the flat sweetness of modern hybrids. The fact that it tolerates heat and drought stress while still delivering multiple ears per plant makes it an unexpectedly practical choice for gardens dealing with summer stress.
Common Uses
This is popcorn corn, bred specifically to pop into the crispy snack we all know. The hulless characteristic means the kernels pop cleanly without leaving bits of shell behind, making for genuinely pleasant eating. You can dry the ears completely and pop them on the stovetop or in an air popper, storing the kernels for months before preparing them.
Growing Timeline
No timeline data available yet for this variety.
Care Instructions
Direct Sow
Sow directly into the garden after the last frost date when soil temperature reaches at least 60°F. Plant in blocks rather than single rows to ensure good pollination, since corn relies on wind to transfer pollen between plants.
Harvesting
Allow ears to fully mature on the plant; they're ready when the husks dry and turn papery and the silk browns completely. Typically this occurs around 86 days after planting. Peel back the husk to check that kernels are hard and fully sized, then twist the ear downward and away from the stalk to harvest. Leave ears on the plant longer than you would for fresh eating corn, the kernels need to harden completely for popping. Once harvested, hang ears in a warm, dry location for several weeks to finish drying before shelling the kernels for storage or popping.
Growing Calendar
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Companion Planting
Ecology & Traits
Edible
Scientific Classification
Zea mays
Family
Poaceae
Genus
Zea
Growth Habit
Upright
Native Status
L48 (I)PR (I)VI (I)CAN (I)
History & Origin
“Japanese Hulless has an intriguing dual heritage. This variety traveled from Japan to Australia, where it became known as Australian Hulless before eventually reaching seed catalogs under its Japanese name. Its journey reflects the way heirloom varieties migrate and transform as they move across continents and growing regions, gaining new names and reputations while maintaining the core traits that made them worth preserving in the first place.”