I spread wood ash on my vegetable garden to feed the soil: when I saw the leaves turning yellow a month later, I understood what I had been blocking all along
Wood ash seems like free fertilizer gold—until your tomato leaves turn yellow between the veins a month later. This isn’t nutrient deficiency; it’s nutrient lockout caused by ash’s powerful pH-raising calcium carbonate. Discover why this happens and how to use ash safely without sabotaging your garden.