Can cinder be directly used to grow flowers?

Cinder can't be directly used to grow flowers.

Although briquettes are products of weathering of the earth's crust and are rich in minerals and trace elements, unburned briquettes have high sulfide content and cannot be directly used for flower cultivation. Cinder can only be used to cultivate succulents, Sanskrit, aloe and vegetables. It has low requirements on soil, and can also be used as cutting seedling substrate to mix soil without increasing fertilizer efficiency.

There are some limitations in cultivating flowers with cinder, so there are many excellent substitutes. For example: ceramsite, volcanic rock, perlite, vermiculite, etc. They are not expensive and not used much, so you can choose to use them.

Ways and methods of cinder utilization

When planting flowers with briquette ash, unburned black coal should be removed first, and larger particles should be screened out, and a layer of coarse cinder should be placed under the flowerpot. Then cover the coarse cinder with a layer of decomposed cake fertilizer, poultry manure, bone meal, etc.

Finally, cover it with a thick layer of fly ash so that it can be planted. In addition, in order to prevent rain from washing away, prevent sun and water, the top layer can also be covered with a layer of coarse coal ash.