Soil health
What healthy soil looks like, why soil health decides yield and cost, and practical steps farmers can take to bring soil back to life.
Read more2006Working with farmers since
20Crops served by the Immunity range
ThousandsMango and apple growers who have used our Specials
AddFarmers served in total (number to be added)
What we work for
Eliminate hunger
Food security starts with soil. Tired soil grows less food for more money. By rebuilding soil life and helping crops use nutrients well, farmers can keep producing food from the same land, season after season.
Healthier soil
Every Immunity formula is made to work with living soil. Our biofertilizers add helpful microbes and our granules improve soil structure.
Fewer hazardous chemicals
Our mission is to make farming free of hazardous chemicals. Healthier crops on healthier soil need less rescue spraying.
Farmers' income
Many of our formulas came from growers who were no longer breaking even. Our work is judged by whether the farm pays, as farmers themselves report.
Impact on the ground
Photo coming soonimpact-before-after-soil.webpBefore and after photo of the same field or soil after a season of soil care
Photo coming soonimpact-farmer-family.webpFarmer family with their harvest
Video coming soonimpact-video.mp4Short video on soil health and food security, with farmers speaking
Results differ from farm to farm with soil, weather, crop and management. Farmer experiences on this site are their own reports, not a promise of results.
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Soil fertility
What soil fertility means, the nutrients crops need, how organic carbon and pH affect them, and how to read a soil test.
Read moreSustainable farming and the 5 Rs
How the 5 Rs (reduce, reuse, recycle, restore, restrict) help farmers grow profitably while protecting soil, water and the next generation.
Read morePotato fertilizer schedule
A stage-by-stage potato fertilizer schedule: what to apply before planting, at earthing up, at tuber initiation and during bulking, and when to stop irrigation.
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