How Many Times Does the Black Orchid Sprout in a Year?
As a traditional Chinese precious orchid plant, the black orchid is highly favored for its upright leaves and elegant fragrance. Many orchid enthusiasts often wonder: How many times can the black orchid sprout new buds in a year? What special care does the new bud development require? This article will systematically answer these questions through scientific data and practical experience.
Characteristics of Black Orchid Sprouting Cycle
Mature black orchids usually sprout a round of new buds only once a year, from March to April, which is closely related to the periodic changes of hormones in the plant. Experimental data show that when the temperature stabilizes above 18℃, the dormant buds at the base of the corm begin to activate, and about 85% of the plants will finish sprouting around Qingming Festival. It is worth noting that newly potted seedlings may have a second germination in autumn due to the need for root system reconstruction.
Key Factors Affecting the Number of Germinations
① Variety difference: The Jiulan series of black orchids have stronger germination power. ② Plant age: Plants over 5 years old have more stable germination. ③ Corm condition: Plump and healthy corms store more nutrients.
Black Orchid Bud Promotion Care Techniques
Environmental Control Techniques
In winter, it is necessary to maintain a low temperature of 12-15℃ for 40 days of vernalization, combined with 3 hours of scattered light exposure every day. Using a shading net with 60% shading rate can effectively prevent damage to the tender buds from strong sunlight in early spring, and humidity controlled between 65%-75% is most conducive to bud point differentiation.
Water and Fertilizer Management Methods
During the germination period, use the "dry-wet" watering method and supplement with diluted orchid special fertilizer 2000 times every month. It is recommended to use a foliar fertilizer high in phosphorus and potassium content, which can increase the germination amount of new buds by 27%. Be especially careful to avoid沾染ing the core of the bud with fertilizer solution at the beginning of germination to prevent fertilizer damage.
Key Points for Caring for Black Orchid New Buds
New buds that reach 5cm in height need to be supported and fixed using disinfected bamboo stakes inserted at a 45° angle. Regularly use a solution of 800 times the concentration of carbendazim to prevent soft rot, and maintain good ventilation in the environment. When the new leaves are fully unfolded, gradually increase the light intensity to promote photosynthesis.
By precisely controlling temperature and humidity, scientific fertilization, and disease prevention, not only can the black orchid sprout regularly every year, but also cultivate high-quality plants with thick leaves and beautiful plant shapes. It is recommended to adjust the maintenance plan flexibly according to the growth state of the plant, continuously observe and record growth data, in order to truly master the rhythm of the black orchid's growth.