“Wood ash is very alkaline with a pH level around 10 to 12 and can easily neutralize acidic soil,” Corbett says. “If added to ...

As a general rule, gardeners should “add no more than five litres of wood ash” per square metre of compost heap.

there’s a good chance you have lots of wood ash on hand. While this ash can be added to compost piles in small quantities, it’s important not to overdo it. Too much wood ash can alter the pH ...