Composting
How do I know when the compost is ready to use?
Compost is finished when the original organic materials are no longer
recognizable and it is no longer generating a significant amount of
heat. Finished compost should have a dark, crumbly appearance and an
earthy odor.
Avoid Using Compost Before It Is Ready
You may be tempted to use compost as a soil conditioner before it is
ready. If the organic materials have not completely decomposed, plants
growing in the amended soil may turn yellow and appear stressed. As the
decomposition process continues near plant roots, soil micro-organisms
compete with plants for nitrogen. Organic acids in immature compost may
also be harmful to plant roots.
Detailed information on composting is available in these Cooperative
Extension Service
fact sheets:
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