Fungi need living roots, air, and moisture — a bag is not a soil

Most crops trade sugars from leaves for water and nutrients that fine fungal threads can reach beyond the root. That trade only works while the fungus is alive.

Treat inoculant as a helper, not a soil. Fungi need oxygen, a host root, and moisture that is neither dust-dry nor standing water. Heavy compaction and long empty fallows leave them with nothing to eat.

Keep living roots in the ground where you can: cover crops, mixed plantings, and fewer bare weeks. Open the soil with organic matter and drainage before you spend on another packet.

If a bed stays lifeless after inoculation, fix air and roots first.

In this series

• Fungi need living roots, air, and moisture — a bag is not a soil
• Put inoculant next to the seed or the transplant root
• Too much phosphorus can turn the partnership off
• Host crops keep fungi; long brassica or fallow sequences starve them
• Tillage, compaction, and waterlogging break the network
• Match the fungus type to the plant — vegetables are not pines