Answer: Plenty of organic matter is excellent for all soil types, including clay, in which it will improve drainage. It is better to work it into the soil; try to at least scratch it in some to the side of the plants. Manure is a good source of organic matter, but make sure it is well-aged, 3-6 months, before putting it around plants. Fresh manure is high in nitrogen, which can easily burn plants.
Q&A Library Searching Tips