How to Improve Drainage in Clay Soil

Overview

Soils that contain a large amount of clay particles present a problem for the gardener. Clay soils are dense, and don't allow water to drain, or air to get to the plant's roots. Adding organic matter to a clay soil is the best way to improve its texture and provide nutrients at the same time. For clay soil, you will need 2 cubic yards of amendment for a 100-square-foot garden. Amendment materials can be purchased in bulk and delivered to your home. Plan to amend your soil in the fall.

Step 1

Dig up the top 12 inches of soil in the garden, turning it and crushing any large clods of dirt. Remove any rocks or other debris.

Step 2

Spread a 6-inch layer of builder's sand and a 1-inch layer of compost over the existing soil. Mix together well, using the garden fork.

Step 3

Level the planting area with a rake.

Step 4

Add a 6-inch layer of wood chips over the top of the amended soil and water deeply. By spring, your soil should be ready for plants.