Bmollyanswered grow question a year ago The growth of moss in the containers is due to the combination of transparency, light, and humidity, creating the perfect environment for its development. To prevent the appearance of moss, I would recommend using opaque containers or covering the transparent ones with material that blocks light. Additionally, make sure to maintain a proper balance of humidity in the growing environment. I hope this solution helps! If you have any further questions, feel free to ask. Best regards!