Detailed Explanation of Natural Orchid Cultivation and Shoot Production Methods

I. Light and Temperature Difference

Generally speaking, when the temperature does not exceed 30°C, allow direct sunlight without shading, provided there is ventilation (ventilation prevents the plants from becoming stuffy and increases carbon dioxide content for photosynthesis), and avoid glass barriers as much as possible, with the ultimate goal of increasing photosynthetic efficiency. Above 30°C, shade to control temperature, and maintain indoor brightness as much as possible through reflection and other methods, also for the purpose of increasing photosynthesis. Ventilate at night to increase oxygen content to aid respiration, strive to maximize the temperature difference, reduce energy consumption through respiration, and help store organic matter, making theorchid plantsrobust, with visibly enlarged pseudobulbs and thicker foliage. During the growing period, as long as the temperature is not below the growth threshold (generally 15-16°C), the greater the temperature difference, the better; during the dormant period, it is best not to go below 0°C. However, as long as they are sheltered from wind and the potting medium is on the dry side, they generally will not suffer frost damage within -5°C.

Traditional cultivation advocatesorchidsbeing grown in shade. In fact, while ensuring humidity and controlling temperature,orchidscan withstand very high light intensity. Finding theorchid'sgrowth point in different environments, and using one month to accumulate the plant energy and organic matter storage that others need 1.5 months, or even 2 months or longer, to achieve, the results will be unexpected.
Sun-grown plants tend to be shorter, which actually helps the flower spike stand above the leaves, but without careful management, leaf tips are prone to scorching. Large clumps are more suitable for sun growing.

II. Reasonable Fertilization

Fertilization is a beneficial and necessary supplement to keep orchid plants robust. Photosynthesis consumes large amounts of water and nutrients. For potted orchids that are watered frequently, nutrient loss is significant. Some orchid growers in certain areas of Zhejiang use alpine humus soil, which is rich in fertility and relatively complete in elements, so fertilization can be appropriately reduced. But some growers use granular media purchased from the market, such as Sendai soil and Zhijinshi, which are relatively lacking in nutrients, so fertilization should be appropriately increased. Applying different fertilizers at different stages according to different media is very important. The application of bone meal or monopotassium phosphate has a direct effect on promoting and strengthening shoots. Many books and experience reports can be referenced, but do not overdose. During the growing period, nitrogen fertilizer should be applied more heavily. If you do not want it to bloom, also apply more nitrogen during the maturation period. The reason is simple: orchids are leaf-growing plants. Adapt to local conditions, and according to different media formulations, alternate between root fertilizer and foliar fertilizer.
Fertilization notes: 1. Slowly figure out the mixing ratios. Different fertilizers, different growing environments and conditions, and different varieties have different fertilizer requirements. Better to be on the dilute side; do not rush for quick results, and do not blindly imitate or copy, as it will backfire; 2. Organic fertilizers are superior to chemical fertilizers. This is the nature of plants; the biological requirements and closeness make organic fertilizers more easily absorbed. Therefore, when applying chemical fertilizers, mixing in some fermented organic fertilizer gives better results; 3. Recommended organic fertilizers: rapeseed cake, bean-based, and urine-fermented fertilizers. 4. The use of foliar fertilizer helps increase leaf count and rejuvenate weak plants, but it will cause old plants to decline more quickly.

III. Water Restriction to Promote Shoots

So-called water restriction means letting the potting medium dry out in the early stage before orchid sprouting, for 3-5 days, generally 1-2 times. Water restriction puts the orchid in a survival crisis, forcing it to grow and reproduce, so the effect on producing more shoots is obvious. During the water restriction period, it can be combined with the application of phosphorus and potassium fertilizers.