Pham Thi Huong went from the back-breaking job of coaxing coffee out of Vietnam’s central highlands to an inconceivable one: growing strawberries on rocks.
Huong and her husband threw in the shovel on their days of toil at the mercy of volatile commodity prices in 2019 and joined vertical agriculture company Orlar. Now they work together at a greenhouse where connected white pillars line up like library stacks, each one holding rock on top…