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Cover Crop Beet is a vigorous annual variety of Beta vulgaris bred specifically for soil improvement and biomass production rather than root harvest. Growing 18 to 24 inches tall in hardiness zones 2 through 10, this open-pollinated cultivar matures in 100 to 109 days and thrives in full sun with moderate water. Its deep taproot penetrates compacted soil layers, breaking them open while the broad leafy canopy suppresses weeds, making it an efficient tool for building soil health before or between cash crops.
Full Sun
Moderate
2-10
24in H x ?in W
—
Moderate
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Red Mammoth Mangel beet delivers rapid biomass production with a taproot system that does the heavy lifting in poor soil. Its vigorous canopy shades competing weeds while its roots scavenge nutrients from deep layers, pulling them back to the surface where future crops can access them. Termination happens quickly, either through natural winter kill in colder zones or deliberate incorporation, leaving behind a richer, more structured soil.
Cover Crop Beet functions primarily as a soil amendment and biomass crop. Its extensive root system and dense foliage are terminated and incorporated into the soil to add organic matter, improve structure, and release trapped nutrients. In some operations, mature roots are harvested as supplemental livestock feed before incorporation, making it dual purpose.
No timeline data available yet for this variety.
Sow seeds directly into prepared soil once soil temperature reaches 50 degrees Fahrenheit. Plant in full sun where the crop will mature undisturbed for 100 to 109 days before termination.
For cover crop use, allow the plant to grow for 100 to 109 days until biomass is substantial, then either terminate by incorporation or allow natural winter kill in zones where frost will end the crop. If harvesting roots for supplemental feed before incorporation, pull roots once they reach mature size, typically in late fall before the heaviest frosts.
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“Red Mammoth Mangel carries the legacy of mangel wurzel breeding, a centuries-old tradition of developing fodder and soil-building beets. These varieties were selectively bred not for the table but for agricultural regeneration and livestock feed, representing a distinct branch of beet development focused on agronomic rather than culinary traits. This cultivar preserves that heritage while serving modern cover crop and soil improvement programs.”