What are the latest methods for keeping Haworthia cooperi in a closed humid environment?
Closed humid cultivation of Haworthia cooperi simply means placing a colorless plastic item with strong light transmission directly over the plant. You can poke holes for ventilation or leave it without holes, depending on your specific situation. Generally, a plastic cup is placed directly over the growing medium in the pot, so the seal is not particularly good, which is why it is basically no longer opened every day for ventilation. If plastic wrap is placed over the pot, cut a large opening in it, clamp it shut with a small clip when you want closed humid cultivation, and open the opening when you want ventilation. Below, the editor will introduce the precautions for closed humid cultivation of Haworthia cooperi!
1. Plants under closed humid cultivation must not be placed in direct sunlight, otherwise, because the smaller the greenhouse space, the local temperature will rise too high and become “braised meat.” Safety first; haste makes waste.
2. The timing for closed humid cultivation can be spring, autumn, or winter. Shading plus cooling can extend the duration of closed humid cultivation. In spring and autumn, closed humid cultivation is meant to accelerate the growth process, and it is generally suitable at 5-50 degrees on cloudy and rainy days. On clear days, it is recommended to remove the closed humid cultivation setup and let it get more sun, but be careful that there are no water droplets on the Haworthia cooperi, otherwise it is easy to sunburn. Haworthia cooperi that has just been watered should also not be put into closed humid cultivation immediately; generally it is better to leave it for a night or a whole day until the moisture has decreased slightly. In winter, closed humid cultivation is to create a small greenhouse effect for Haworthia cooperi. You should observe the situation promptly to prevent mold. Watering frequency should not be too frequent or too much; it is best to only slightly soak the pot.
3. If you like the color differences in Haworthia cooperi caused by large temperature differences, use closed humid cultivation with caution. This is because Haworthia cooperi is generally kept under closed humid cultivation in spring and autumn, which is exactly when the temperature difference is large, and closed humid cultivation creates a small greenhouse for Haworthia cooperi, preventing it from producing its colorful appearance under large temperature differences.
4. Plants under closed humid cultivation often develop cracked leaf windows because of excessive humidity, so when the temperature rises, increase the time the cover is lifted, letting the plant go through a gradual adaptation process. Actually, I have always wanted to see Haworthia cooperi burst its windows, but this has never happened for me. I have, however, heard others say it has happened for them.
5. During closed humid cultivation, watering must be well controlled; in a high-temperature, high-humidity environment, it is very easy to cause root rot or leggy growth.
6. Long-term closed humid cultivation will cause the plant's resistance to decline, so the duration of closed humid cultivation should start from the beginning of winter and be promptly removed after the temperature rises again the following spring.
7. Closed humid cultivation makes the air humidity in the local space too high, which easily breeds diseases and scale insects, so you must moderately adjust the local environment and the effects of other management measures according to the plant's condition.
Finally, one point to remind everyone: for growing local flowers and plants, as well as flowers and plants that originally grow relatively quickly, it is not necessarily necessary to use the closed humid cultivation method. Closed humid cultivation is only a temporary practice to improve the unattractive plant shape of Haworthia cooperi, and it is not necessarily suitable for all situations.