How to grow mustard
Sow mustard seed at 5g per square metre by scattering on the surface of your soil before raking and tamping (pressing down) to get rid of any air pockets. You can also sow mustard in rows 15cm apart.
Mustard prefers fertile soil and if you are following a crop rotation system, it should be grown in the same area or rotation as other brassica plants.
You can leave mustard over winter, however a heavy frost may kill the plants.
Incorporating mustard into your soil
Cut down or hoe off leaves as the flower buds form, or two to four weeks before you need the soil for your next crop (whichever is sooner). Dig in the whole plants.