Detailed Explanation of the Key Technical Points for Growing Orchids Outdoors

Replying to orchid-growing friend Mei Zixin: "Detailed Introduction to the Key Technical Points for Growing Orchids Outdoors"

http://www.dfac.cc/showtopic-17-259196-0-0-1.htm

Advantages of outdoor cultivation: good light, good ventilation, fast heat dissipation. Disadvantages: humidity cannot be controlled during the rainy season, and diseases are likely to occur, so the following points should be noted: 1: Spray pesticides promptly. For example, Fusarium wilt and soft rot are most likely to occur during the rainy season. Prochloraz-manganese, difenoconazole, streptomycin or Bordeaux mixture can be used for prevention and treatment. 2: The materials used must drain well, and the spacing between pots must not be too dense, as this affects ventilation. The area under the pot racks must be kept dry, with no standing water, to avoid bacterial reproduction. 3: To prevent excessive vegetative growth, do not apply too much nitrogen fertilizer. During the rainy season, supplement with phosphorus fertilizer to make the plants more robust. 4: If any diseased plants are found, isolate them immediately to avoid contagion. 5: Autumn tends to be dry, and maintaining humidity is difficult. Water must be supplemented on the leaf surface to avoid scorched leaf tips. In winter, prevent cold damage. Phosphorus fertilizer must not be too high, and potassium fertilizer should be supplemented in small amounts.