How To Use Wood Ash As Fertilizer

The wood ash contains all the nutrients your plants need, except nitrogen.
The ash produced in a household during winter can cover almost all the phosphorus and potassium needs of a medium-sized vegetable garden.
It can be used as fertilizer the ash derived from burning the – wood, manure, stalks or paper.
It can’t be used as fertilizer the ash derived from burning coal.


Wood ash fertilization produces maximum effects when is incorporated dry into the soil.

Because it is hygroscopic, the ash that it’s only sprinkled over the soil and not incorporated gets wet and loses its qualities.

Thus, it should be stored in sealed plastic bags during the winter.

For the same reason, don’t throw wood ash in the garden in the winter.

The best time to use ash is in autumn, when it can be incorporated into the soil by plowing.

Used in Spring, wood ash can inhibit seed germination.

The wood ash has an alkaline reaction, having a corrective effect on acid soils.
It is inappropriate to use wood ash on alkaline soils.
It is not recommended to use wood ash for fertilizing soils where acid-loving plants grow (eg blueberries).

Image Credits: Permies

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