How to Make Clay Soil Good for Planting
- 1). Dig your clay soil using a spading fork, and break up large clumps of the clay using the side of the fork as you turn the soil over. Allow the broken-up clumps to be exposed to the air and sun so that they can dry out and crumble.
- 2). Apply a fine spray to the clay to allow it to soften. Allow the clumps to dry and rake them again. Completing this process a couple of times will help break up most of your clay soil's clumps.
- 3). Collect a sample of your clay soil before you plant in the spring and take it to your local extension office to have it tested. The extension office should be able to tell you what percentage of the soil already has organic matter in it and how much organic soil you need to add to the clay to help it reach its right pH. A pH between 6.3 and 6.8 is ideal for most garden plants, according to the National Gardening Association.
- 4). Add organic matter to your clay soil, which will help to lighten the clay and improve drainage, making it better for planting. Consider using green plant material, leaf mold, compost or manure. If using manure, leach it with water to get rid of excess salt that can cause damage to your plants. Work a 2-inch to 3-inch layer of the amendments into the soil to shovel depth, about 8 inches to 10 inches down. Avoid using peat moss, sawdust or straw, as they can compete with plants for essential nitrogen.
- 5). Place a layer of straw over your clay soil bed during the winter. This will protect the soil from compaction due to forces such as hard rain, and will also decrease erosion and weeds. Till the straw in before the growing season begins and wait a minimum of a few weeks before planting to give the straw a chance to break down.
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