First, can it be changed? It cannot be an ancient species. Old seeds refer to offspring seedlings that have been fully reproduced in the natural environment and can well maintain the characteristics of the original seeds. Tissue culture seedlings use mother plants to cultivate, grow, develop, and regenerate complete plants through artificial cultivation under sterile conditions. Therefore, tissue culture seedlings cannot become old seeds. Although both are reproduced from mother plants, the difference is still quite big. The roots of tissue culture will be whiter, thinner and smoother than those of older varieties. Pros and cons of tissue culture. Advantages: Tissue culture orchids can reproduce some precious orchids in large numbers. In addition to being cheaper, many rare varieties of orchids can also enter the homes of ordinary people. It can also meet the growing demand for orchid seedlings in the market, otherwise wild flower seedlings alone cannot meet the public demand. Secondly, tissue culture orchids can be used to cultivate identical orchids in a concentrated manner without any difference in color or leaf shape. In addition, through tissue culture, it can be detoxified and become a virus-free vaccine. 2. Disadvantages: Difficulty in reproduction. Because tissue culture orchids are grown in a sterile environment, the temperature and humidity are strictly controlled. Therefore, it has poor resistance, has high requirements for temperature and humidity, and is not resistant to diseases. That is, it is much more delicate than wild orchids. The flowers of tissue-cultured orchids are prone to degeneration, and the leaves will become shorter, making it difficult to bloom. The growth of tissue-cultured orchids is unstable and prone to problems such as short and thin leaves, difficulty in flowering, drop of seedlings, and weak flower fragrance. In addition, the flower color and leaf shape of tissue-cultured orchids will not change, and they lack the beauty of individuality. But wild orchids are rarely exactly the same, and even the same orchid from the same mountain will vary slightly depending on where it grows.