Ginkgo biloba can be used as fertilizer after decay. It has high nutritional value and can be directly used as fertilizer, whether fermented or unfermented.
If you want to cultivate flowers by fermentation, you can try to compost ginkgo nuts with other organic wastes such as peels or fallen leaves. In the fermentation process, the microorganisms in these wastes will decompose the organic matter in ginkgo fruit, produce organic fertilizer and promote the biological activity in the soil.
However, it should be noted that high temperature and gas will be generated in the fermentation process, which may have a certain impact on the environment and plants. Therefore, we should pay attention to safety in the fermentation process to avoid pollution and odor.
The above information is for reference only. If you need more information, it is recommended to consult the gardener or read books on flower breeding.