Wood Ash in Your Garden: Why Scientists Say This Centuries-Old Practice Triggers Hidden Nutrient Collapse
For centuries, gardeners have scattered wood ash to boost soil fertility. But modern soil science reveals a hidden trap: ash spikes soil pH so dramatically that it locks manganese, iron, and zinc into forms plants cannot absorb, creating invisible deficiency even in nutrient-rich soil. Find out when ash actually helps—and when it sabotages your garden.