Step 6: Add compost and fertilizer to the top soil.
Break up any clumps of top soil and aerate the soil by turning it. Add compost in a ratio of one part compost to three parts top soil and mix thoroughly. The compost provides microorganisms to help the roots grow. Following the directions on the package, add organic fertilizer. Typically you will want to use fertilizer low in nitrogen if you are planting in the fall, so that you don’t stimulate the growth of new leaves. Conversely, you will want to use fertilizer higher in nitrogen if you are planting in the spring to stimulate growth of new leaves. Your nursery can suggest the right fertilizer for your situation. Mix the fertilizer thoroughly into the soil.
Mix the fertilizer and compost with the soil in a wheelbarrow.
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