How many mustard plants do you need to make mustard?
More Tips. To keep this task from being tedious, I usually process four plants at at time. It takes about 10 minutes and nets at least a pint of delicious mustard seeds. Also, since those plants were my biggest and best, those spice seeds can also be planted in the garden.
What can you not plant with mustard?
Plants to Avoid
Never plant mustard greens near sunflower, soybeans and dried beans as all of these plants can suffer from the same disease problems, such as downy mildew, white rust, leaf spots and mosaic virus. These plants can pass diseases back and forth between each other, infecting your entire crop.