Asked March 23, 2015, 1:21 PM EDT

How much mulch ( ) should be used in the garden/containers; mixed in or spead on top? Thanks.

Adams County Colorado soil and fertility issues

1 Response

By definition, mulch is something that is spread on the surface of the soil. For vegetable or annual flower gardens we recommend using a much that has a lower carbon to nitrogen ratio such as grass clippings or weed-free straw. For areas around trees, shrubs or perennials, woodchip much is a good choice. A layer of woodchips about 3 inches deep is recommended.

If you are thinking about adding organic matter to the soil as an amendment (mixing it in). We recommend adding 2-3 inches of plant based compost or 1 inch of manure annually and mixing it into your soil to a depth of at least 6 inches. Here are a couple factsheets with more information:

I hope this helps, please let me know if you have any ofther questions.