Blue Autumn Radish is a striking heirloom variety that brings an unexpected pop of color to fall gardens and winter kitchens. With its distinctive purple-blue tapered roots and creamy ivory flesh, this German favorite delivers mild, peppery flavor in a package that stays crisp and juicy even when allowed to grow larger. Ready to harvest in 40-60 days, these roots reach 2-4 inches across and thrive as a cool-season crop, making them a genuine rarity in American gardens despite centuries of use in European cuisine.
—
Moderate
?-?
12in H x ?in W
—
Moderate
Hover over chart points for details
The purple-blue exterior of this radish is genuinely arresting, a color you won't find in most American seed catalogs, yet the surprise deepens when you slice into the ivory-white flesh underneath. German cooks have long treasured this variety for its ability to maintain crisp texture and mild flavor even at larger sizes, making it equally at home shredded raw into winter salads or simmered into warming soups. The tender flesh carries subtle pepper notes that enhance rather than overwhelm, and the roots store remarkably well through the colder months.
These radishes shine in the roles German cooks have used them for centuries: sliced thin into crisp winter salads where their mild pepper flavor brightens without burning, or simmered into soups where their tender flesh softens into the broth while maintaining structure. The ivory flesh's crispness persists even at larger sizes, making them excellent for shredding into slaws, roasting alongside other root vegetables, or simply serving raw with good salt and bread as a traditional German preparation.
No timeline data available yet for this variety.
Direct sow seeds 2 inches apart in late summer for fall and early winter harvest. For continuous supply, succession plant every two weeks from mid-summer until 6-8 weeks before the first expected frost in your region, allowing each planting 40-60 days to mature.
Begin harvesting when roots reach 2-4 inches across, typically 40-60 days from sowing. The distinctive purple-blue color intensifies as roots mature, making them easy to spot. Gently loosen soil with a fork and pull roots free; they should come away cleanly when properly sized. Unlike spring radishes, these autumn types actually become milder and crispier as temperatures cool, so there's less urgency to harvest at a specific moment. You can leave them in the ground through light frosts if needed, which actually improves flavor.
Enter your ZIP code to see a personalized growing calendar for this plant.
“Blue Autumn Radish carries the culinary traditions of Germany, where it has been a staple of winter cooking for generations. These roots appear rarely in American seed catalogs and home gardens, remaining far more common in European kitchens where they're prepared in traditional dishes like Rettich Kartoffel Suppe, a hearty potato and radish soup that exemplifies root vegetable cooking at its most warming and practical. The variety persists today through seed savers and heritage-focused catalogs who recognize its value not as a novelty but as a genuine winter food crop with deep regional roots.”