Root Vegetable
Mars Celeriac is an open-pollinated celery root variety that reaches harvest in 95 days, delivering the earthy, nutty flavor that makes celeriac such a prized cool-season crop. This organic cultivar thrives in fertile, consistently moist soil and produces the crisp, dense roots that make it a staple in European kitchens. Starting from seed indoors 10, 12 weeks before transplanting ensures you'll have mature roots ready by fall.
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High
2-10
?in H x ?in W
Biennial
Moderate
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Mars Celeriac rewards patient gardeners with substantial, flavorful roots that store exceptionally well, up to six to eight months in cold storage. Its 95-day timeline makes it ideal for regions with reliable autumn harvests, while the open-pollinated genetics mean you can save seed year after year. The variety's dependence on consistent moisture keeps demanding gardeners engaged throughout the season, which is exactly what produces the best flavor and yield.
Celeriac roots are prized for their subtle, refined celery flavor and creamy texture when cooked. They're central to European cuisine, particularly in soups, purees, and gratins, where their dense flesh breaks down into silky richness. Roasted until caramelized, the roots develop deep, earthy notes that complement both vegetable-forward and meat-based dishes. Raw sliced thin, they add a crisp, mineral quality to winter slaws and salads.
Sow seeds indoors 10–12 weeks before your intended transplant date. Sow 6 seeds per inch at 1/8 inch depth in 20-row open flats or plug trays, keeping soil consistently moist. Maintain soil temperatures between 70–75°F (21–24°C) for germination; seedlings should emerge in 2–3 weeks. Once sprouted, reduce temperature to 60–70°F (16–21°C). When seedlings develop their second true leaf, transplant them into 72-cell plug trays to give roots more space before moving outside.
Transplant outdoors once weather is warm and settled, typically after your last spring frost. Set plants 6–8 inches apart in rows spaced 24–36 inches apart. Water immediately after transplanting and maintain steady moisture as plants establish.
Harvest Mars Celeriac when roots reach full size, typically around 95 days from transplanting. This occurs in late autumn for spring-started plants. Loosen soil around the base of each plant, then lift gently to expose the full root bulb. Cut away foliage close to the crown, leaving just enough stem to protect the root from damage.
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