Crop Rotation Group
Brassicas (Cabbage family)
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Soil
Fertile, well drained soil.
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Position
Full sun to partial afternoon shade.
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Frost tolerant
Mustard is cool-season annual that can tolerate light frosts but not hard freezes.
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Feeding
None generally needed, because mustard is customarily used as a late summer/fall cover crop to take up nitrogen left in the soil by corn or other vegetables.
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Companions
Mustard does an excellent job of suppressing weeds when grown in a solid mass.
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Spacing
Single Plants: 5" (15cm) each way (minimum)
Rows: 5" (15cm) with 5" (15cm) row gap (minimum)
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Sow and Plant
Sow in late summer to use mustard as a short-term fall cover crop. Broadcast seed into cultivated soil so that the seeds are about 2 inches (5 cm) apart and one-half inch (1 cm) deep. Thin to 6 inches (15 cm) apart in all directions.
Our Garden Planning Tool can produce a personalized calendar of when to sow, plant and harvest for your area.
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Notes
You can gather individual leaves for cooking, which taste best after the first frost has passed. Mustard residue suppresses soil-borne nematodes, so it is an excellent cover crop to grow before potatoes.
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Harvesting
Chop down the green foliage with a hoe and turn it under just before hard freezes are expected. The mustard roots and foliage will rot during the winter months.
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Troubleshooting
Irrigation is often needed to get a good stand in dry fall weather.
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