How to Amend Clay Soil

Clay soil lacks the porosity to allow plants to grow well in it. By adding the right materials to it, clay soil can better sustain plant growth.

You will need

  • Organic matter
  • such as compost
  • A garden spade
  • Iron sulfate
  • A phosphate supplement containing gypsum

Step 1 Add organic matter Mix organic matter such as commercial or homemade compost into the soil using a garden spade. Anything derived from plant or animal matter will help improve the soil structure.

Step 2 Add iron sulfate Mix in iron sulfate as a source of iron. While there is iron in clay, it is very hard for plants to extract it from clay.

Step 3 Add phosphate Mix in a phosphate supplement containing gypsum. Gypsum loosens the clay’s attraction to itself.