Can orchids be grown in walnut shells?

Can walnut shells be used to grow orchids?

Orchids can be grown in walnut shells. Walnut shells are the outer shells of walnuts. They are relatively hard in texture and have large gaps. Generally, after being composted, the nutrients they contain can also be used as soil nutrients to supply the growth of orchids.

Advantages and Disadvantages of Walnut Shell Orchids

Advantages: Walnut shells have certain toxicity and can effectively prevent the occurrence of insect pests. Walnut shells also have a good effect of loosening the soil, which can increase the permeability of the soil and prevent the soil from becoming compacted.

Disadvantages: Walnut shells are prone to mold and usually attract insects in humid conditions. Insect eggs and bacteria will cause pathogens in orchids and also cause certain nutritional deficiencies in the growth of the root system.

How to grow orchids with walnut shells

1. Sterilization and fermentation: Walnut shells need to be fermented before use. During the fermentation, they can be twisted into a relatively fine state and piled together for fermentation. Generally, the fermentation time is half a year.

2. Planting: The processed walnut shells need to be spread out in the sun before they can be used. When using, you can mix them with leaf mold and pine bark to plant orchids, or you can directly spread them on the surface of the soil for maintenance.