No one fertilizes the Sierra Madre. No one waters it, weeds it, or feeds it. And yet it has been the most productive system on the island for longer than any farm has existed. How?
The economy underground
Beneath every step of forest floor runs a network of fungal threads — the mycorrhizae — laced through the roots of nearly every tree. Through it, trees trade sugar for minerals, share water, and even send warnings. A dying tree will pour its remaining carbon into the network for its neighbours. The forest is not a collection of individuals competing. It is an economy of exchange.
The soil is not dirt. It is a marketplace, a memory, and a body all at once.
A fallen leaf is not waste here — it is a paycheck, decomposed by microbes into the exact nutrients the next generation of roots will draw up. Nothing leaves the system. Everything returns. This is the closed loop that permaculture tries to imitate: fertility that regenerates itself instead of being trucked in from outside.
What a garden borrows from the forest
Grow in bare, tilled rows and you must feed the soil forever, because you have removed the workers that feed it for free. Grow the way a forest does — many layers, permanent roots, a living mulch of fallen matter — and the ground begins to feed itself again. The lesson is not a product. It is a relationship you stop interrupting.