Cultivate the garden soil until it is loose 6 inches deep.
Use a garden hoe to create planting rows. Leave a space of 1 foot between each row.
Mix 10-10-10 fertilizer with the turned soil at a rate of 4 cups for every 100 feet of garden space.
Sow the Indian mustard seeds approximately 1/2 inch deep and water it until the soil feels moist.
Thin the seedlings after they develop three or four leaves. Allow a space of 3 inches between each plant. Spread 3 inches of mulch around the seedlings after thinning.
Keep the soil evenly moist at all times.
Broadcast 21-0-0 fertilizer alongside the plants approximately one month after thinning. Apply 1/2 cup of fertilizer to every 10-foot row and water thoroughly after feeding.