EDWIN WAITA KENYAN urban farmer Francis Wachira credits a soil recycling company with keeping him afloat financially during the coronavirus crisis: it helped him to start producing herbs and vegetables on his tiny Nairobi plot. The locally-owned company, Sprout Organic, mixes animal bone meal, seeds, foliage, dry leaves, twigs and kitchen waste like banana peels, to concoct a composite that is then sold to urban farmers like Wachira to grow food in small spaces. Wachira, 71, used to make a living by renting out tiny tin shacks he built, but the coronavirus pandemic meant his tenants could no longer pay…