How to Care for Orchids in Autumn
As the autumn breeze begins to pick up, orchid care enters a critical phase. As one of China's top ten famous flowers, orchids require special attention in autumn to maintain their elegant posture. This article will systematically analyze the key points of autumn orchid care, from environmental control to detailed management.
I. Adjusting the Autumn Environment for Orchids
1.1 Light and Temperature Management
In early autumn, continue the summer shading strategy and use a 50% shade net. Gradually increase the duration of direct sunlight after White Dew and ensure 4-6 hours of scattered light before Frost Descent. When the temperature drops to 15°C, move the orchids to a south-facing windowsill indoors.
1.2 Optimizing Air Circulation
Ensure 3-4 hours of ventilation daily, and installing a mini circulating fan can improve air flow. Move the orchids away from the windowsill 12 hours in advance of a typhoon warning, and using a hanging basket can quickly transfer the plants.
II. Autumn Health Management for Orchids
2.1 Disease and Pest Control System
Establish a "three-defense system": apply carbendazim (1:1000) once a month for disinfection, and alternate between pymetrozine and abamectin every half month. When the leaf tips turn yellow-brown, disinfect the pruning shears with alcohol, make an oblique cut on the affected part, and apply charcoal powder to the cut.
2.2 Scientific Fertilization Plan
From White Dew to Cold Dew, use the "sandwich fertilization method": sprinkle bone meal (5g/pot) on the surface, bury decomposed sheep dung balls (3-5 pieces) in the middle layer, and spray phosphorus potassium fertilizer (1:1500) on the leaves). Pay attention to stopping nitrogen and controlling excessive growth to prevent autumn sprouts from becoming elongated.
III. Secrets of Watering Orchids in Deep Autumn
3.1 Moisture Detection Skills
Use the "three-finger detection method": insert the index finger 3cm into the growing medium, the middle finger feels the pot wall's moisture, and the ring finger estimates the pot's weight. After confirming dryness with the triple signals, water in the sunny and warm morning.
3.2 Accurate Watering Method
Use a long-spout watering can to slowly water along the pot wall, watering thoroughly in three intervals of 10 minutes each. Pair with an ultrasonic humidifier to maintain 60% air humidity, and wipe the back of the leaves with a soft cloth weekly to remove dust. The water temperature should be the same as the room temperature to avoid stimulation from temperature differences.
Caring for autumn orchids focuses on grasping the changes of the season, with three core measures: adjusting light, preventing diseases, and controlling water and fertilizer, combined with precise water management in deep autumn. This allows the orchids to accumulate enough nutrients for blooming the following year. It is recommended to establish a care log, recording daily temperature and humidity and the plant's condition, gradually forming a personalized care system.