When people picture African landscapes, they often imagine dust, drought, and thinning vegetation. But in central Tanzania, farmers are seeing something that feels almost backwards in the best way. Trees are coming back in places where they were cut down decades ago, and no one is planting new seedlings.<\/p>\n
The surprise is not magic. It\u2019s management. Instead of starting from zero, communities are working with an \u201cunderground forest\u201d of living roots and stumps that never fully died, using a method called Farmer Managed Natural Regeneration (FMNR), known locally as \u201cKisiki Hai.\u201d<\/p>\n
The forest hiding in plain sight<\/p>\n
A cut tree can look finished, especially in drylands<\/a> where the ground bakes hard and plants struggle. But in many fields, the stump\u2019s root system is still alive, sending up small shoots that resemble weak shrubs.<\/p>\n FMNR works by selecting the strongest shoots and pruning the rest so the plant\u2019s stored energy is focused on fewer stems. Farmers also protect those shoots from grazing animals, which is often the difference between \u201cit tried\u201d and \u201cit returned.\u201d<\/p>\n Why planting trees can disappoint in dry regions<\/p>\n Big tree-planting campaigns<\/a> can look great in photos, but survival is the hard part. In the Sahel, researchers and practitioners have pointed out that \u201c80 percent or more of planted trees have died,\u201d largely because seedlings need water and long-term care in places where both are scarce.<\/p>\n That\u2019s why regeneration from existing roots can be so compelling. A stump already has a deep, established system underground, giving regrown trees a head start compared with a nursery seedling that still needs years to chase moisture downward.<\/p>\n How \u201cKisiki Hai\u201d works on real farms<\/p>\n Justdiggit, which works with local partners in Tanzania, describes Kisiki Hai as \u201cliving stump\u201d in Swahili, and the approach is meant to be simple enough to repeat season after season. Farmers identify stumps worth saving, prune down to a few strong shoots, and keep protecting the regrowth through the year.<\/p>\n They even teach it as a four-step reminder in Swahili (\u201cCHAPOA TU\u201d), emphasizing selection, pruning, marking, and ongoing protection. That last step matters because if goats or cattle browse the shoots at the wrong time, the \u201cnew tree\u201d becomes tomorrow\u2019s firewood again.<\/p>\n What the numbers suggest in Tanzania<\/p>\n Zoom out, and Tanzania\u2019s forests are already largely a story of natural regrowth. A Forest Trends dashboard<\/a> summarizing national reporting to the FAO describes about 45.8 million hectares of forest area in 2020 (about 113 million acres), including 45.1 million hectares of naturally regenerating forest (about 111 million acres) and about 0.5 million hectares of planted forest (about 1.24 million acres).<\/p>\n