Wood ash is an excellent source of lime and potassium for your garden. Not only that, using ashes in the garden also provides many of the trace elements that plants need to thrive. But wood ash fertilizer is best used either lightly scattered, or by first being composted along with the rest of your compost.

Are burnt ashes good for soil?

Wood ash contains nutrients that can be beneficial for plant growth. ... In addition to its nutrient content, wood ash can help in neutralizing soil acidity. When wood is burned, high amounts of carbonates are produced. Carbonates react with and neutralize acid in the soil, causing the soil pH to increase.

Can you fertilize with ashes?

A: Yes, wood ash can be applied to the soil as a source of highly soluble potassium and phosphorus, but with caveats: Screen or pick out the obvious chunks of wood. Ash increases soil pH.