Ash is an excellent fertilizer that is suitable for many plants, but not all.
In addition, it is important to understand that if the ash is taken from the wrong tree, there will be no benefit.
Ash is considered to be rich in potassium, which is an important element that helps garden crops produce a quality harvest. But the result can only be obtained from wood ash.
For example, if you take ash from tops, it will bring much less benefit.
The remains of sunflowers or buckwheat are richer in potassium and other elements.
In terms of potassium content, it is second only to peat ash. It has more calcium and can also be actively used to deoxidize the soil.
The only ash that definitely cannot be used for plant feeding is the one that remains after burning rubber, plastic, or any garbage. Such a product will only cause harm.