soil health
feed the soil food web
the plants you can see are fed by the life you cannot — tend the microbiome and it tends your garden.
under every healthy plant is a trade network older than agriculture. bacteria and fungi unlock minerals and hand them to roots in exchange for sugars; protozoa and nematodes graze them and release plant-ready nitrogen; fungal threads carry water and nutrients across metres of soil. you do not feed plants so much as feed this web, and let the web feed the plants.
the method
- 01
stop killing it
tillage shreds fungal networks and synthetic salts and biocides thin the whole community. the first act of feeding the food web is to stop disrupting it — no dig, no soluble salt dumps, no bare ground.
- 02
feed diverse carbon
different microbes eat different foods, so feed a varied diet: compost for bacteria, wood chip and leaf mould for fungi, living root exudates for both. variety above ground grows variety below.
- 03
keep living roots year-round
roots leak sugars that feed the microbes directly — the single most powerful lever you have. cover crops and perennials keep that sugar flowing through the seasons when annual beds would sit empty and starving.
- 04
favour fungi for perennials
orchards, shrubs, and no-dig beds want a fungal-dominated soil: mulch with wood chip and leaf mould, and never rototill. veg beds tolerate a more bacterial, compost-fed balance. match the biology to the planting.
- 05
brew and inoculate, carefully
a well-made compost or a gentle compost extract can carry biology into a lifeless bed. it is an accelerant, not a substitute — biology only stays where there is carbon and cover to keep it fed.
field notes
- the woodland-floor smell of good soil is the metabolites of a thriving microbial community — learn to trust your nose.
- one shovelful of soil holds more organisms than there are people on earth; you are gardening a civilisation.
- mycorrhizal fungi colonise most plants for free from healthy nearby soil — undisturbed ground is the best inoculant there is.
common mistakes
- ×sterilising the problem away with fungicides and salts, then wondering why the soil needs ever more input to grow anything.
- ×expecting a bottled inoculant to fix a bed you keep tilling and leaving bare. biology needs a home, not just a dose.
plants for this practice