QuestionsHow to growVegetable GrowingSite and SoilAshes 0 Vote Up Vote Down Ray Dunford asked 15 years ago Is it ok to put ashes directly into earth where veg would be planted? Is it ok to put ashes into a compost bin? 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 7 years ago Coal ashes are of no benefit, wood ashes contain potash, but either can be added to soil. There is no advantage in adding them to compost.