Can leaf ash be used as fertilizer?

Leaf ash as fertilizer

The ash from burnt leaves can be used as fertilizer for potted flowers. It is an insoluble substance, but it contains a large amount of minerals, among which potassium is the highest. Generally, after sowing flowers, covering the seeds with a layer of wood ash about 2 cm thick can make the seeds germinate 10 days earlier.

Grass leaf ash is the main source of potassium fertilizer and contains a lot of calcium, but it is often alkaline and is more suitable for flowers that like alkali, such as carnations, geraniums, roses, tamarisks, Amorpha fruticosa, ash and various vegetables. In addition, leaf ash can also be applied to flowers that like neutral soil, which can make the flowers bloom better.

How to make fertilizer from leaf ash

1. First, you need to collect leaf ashes. The collected leaf ashes should have been burned for a period of time. The leaf ashes that have just been burned are not suitable for use as fertilizer.

2. The first method is to sprinkle the leaf ash directly into the flowerpot without any treatment.

3. The second method is to mix the leaf ash with water, leave it for a while and then put it in the flowerpot.

Key points for using leaf ash fertilizer

1. Leaf ash can be mixed with soil as base fertilizer, or sprinkled on the soil surface as topdressing. If you want to prevent insects, sprinkle a circle of wood ash around the plants, a thin layer will do.

2. If you mix it with soil as base fertilizer, apply it when repotting in spring and autumn. If you use it as topdressing, generally apply it before the arrival of low temperatures each year, that is, in late autumn. Fertilizing at this time can improve the plant's cold resistance.