Cover Crop / Cool season

Yellow Mustard Cover Crop

Fast brassica cover crop for open spring or fall beds.

Grown for soil cover and biomass, not leaf harvest in this context.

Seed spacing and maturity

Days to maturity
45
Germination temperature
45-85F
Seed depth
0.25 inches
Spacing
2 inches
Row spacing
6 inches
Start method
Direct sow

Frost-date timing

Direct sow
28 days before last frost
Fall planting
8 weeks before first frost

Action plan

Can I plant this now?
Use your local last-frost, first-frost, and soil-temperature checks before treating this crop as plantable today.
Start indoors or direct sow?
Direct sow into the final bed when the soil temperature, seed depth, and moisture are ready.
How much space?
2 inches in-row spacing, 6 inches between rows, and 0.25 inch seed depth.
Best companions?
Use crop-family rotation first, then pair with compatible timing, spacing, and canopy size rather than relying on a simple companion chart.
Common failure modes?
Rotate away from brassica vegetables to reduce same-family disease pressure. Moderate moisture helps quick canopy closure. Average, well-drained garden soil.

Growing profile

Sun
Full sun
Water
Moderate moisture helps quick canopy closure.
Soil
Average, well-drained garden soil.
Watch
Rotate away from brassica vegetables to reduce same-family disease pressure.
  • cover-crop
  • brassica
  • quick-crop
  • green-manure

Browse context

Related varieties

Source: Wisconsin Extension cover crops and green manures