How is plant growth affected by humus?

Humus soil promotes plant growth in a number of ways. First, it provides most of the nutrients plants need along with trace amounts of metals and minerals. Secondly, humus contains a range of microorganisms that break down plant waste and help roots absorb nutrients from the soil. read more

Tilled into the soil, humus bonds with tiny minerals within the soil to create bigger soil particles and these larger fragments allow small air pockets to form within the soil. Air can readily move through the soil for healthy plant root growth. In addition, humus's water retention abilities also helps plants. read more