Prepare the soil well including ‘Mumbi Magic or Cow manure incorporated into the soil at a rate of 1/3 soil improver to 2/3 existing soil. Follow above information and mulch well with Karri and Peat mulch.
I recommend ‘Grow Safe Home Gardener’ fertilizer as a simple and very effective way to fertilize for all your garden including potted plants. (apply granular fertilizer to the soil and keep it off the plants foliage and stems).
Remember you can plant a garden any time as long as you prepare the area well and water the soil regularly in dry weather.