Amending Clay Soil - Knowledgebase Question

Muskego, WI
Question by Brdgrl12
July 28, 1998
I have very heavy clay soil, what is the best method to correct this?

Answer from NGA
July 28, 1998


There's no overnight method to improve heavy clay soil, but you can improve its fertility over a 3-4 year period and then maintain it by annual incorporation of organic matter. You can also help loosen your soil by sowing a cover crop this fall and digging it into the soil in the spring prior to planting. Start with 4-5 inches of compost or other organic matter over the top of the garden bed and digging it in to a depth of 10-12 inches. Add an organic mulch and dig it in this fall prior to planting your fall cover crop. Expect it to take several years - but with persistence you can have terrific soil.

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