Martian Jewels Sweet Corn

Martian Jewels Sweet Corn, Heirloom Seeds — An Out-of-This-World Heirloom with Stunning Color & Rich Flavor

Martian Jewels is a showstopper in the garden — 8"–10" ears of pearl-white kernels set against deep violet cobs, stems, and husks that look like they landed from another planet. But the real magic is in the story behind it. This open-pollinated variety was carefully developed using Native American Hopi blue corn as a parent, loading each kernel with beneficial anthocyanins (antioxidants) while preserving a classic, slightly less sweet corn flavor that modern hybrids have all but abandoned.

Three Ways to Harvest

• Fresh eating: Harvest at peak milk stage for tender, subtly sweet corn on the cob
• Chowder & breads: Let it mature a bit longer as sugars subside for a richer, starchier bite
• Dried flour: Allow full dry-down on the stalk and grind the striking kernels into a nutritious, colorful flour

Why Grow Martian Jewels?

• Striking ornamental appeal — violet stalks and husks make a garden statement
• Open-pollinated & seed-saving friendly — save seed year after year
• High in anthocyanins — one of the most antioxidant-rich sweet corns available
• Versatile harvest window — fresh, semi-dry, or fully dried
• A true conversation piece — at the farmers market or dinner table

Growing Notes

Direct sow after last frost when soil has warmed to at least 60°F. Plant in blocks of at least 4 rows for good pollination. Space 12 inches apart in rows 24–36 inches apart. Full sun. Water consistently, especially during tasseling and silking. Harvest at 70–75 days for fresh eating, or allow to fully dry on the stalk for flour.

Days to maturity: 70–75 days
Plant height: 6–8 feet
Packet size: ~25+ seeds
Type: Heirloom, Open-Pollinated, Non-GMO, Annual
Sun: Full sun
USDA Zones: 3–10