Phalaenopsis orchids, also known as moth orchids, boast diverse colors and beautiful shapes, earning them the title "Queen of Orchids." Some orchid enthusiasts have reported that the flowers of their Phalaenopsis orchids have withered after blooming. So, what are the reasons for Phalaenopsis orchid flower withering? Let's explore together.
Reasons for Phalaenopsis Orchid Flower Withering
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Overwatering: Excessive watering can lead to waterlogged potting mix, causing root injury and hindering nutrient absorption, resulting in wilting of the orchid flowers.
Solution: Water Phalaenopsis orchids when the potting mix is slightly dry to the touch, maintaining humidity between 60% and 80%. In dry indoor conditions, use a misting method for supplemental watering. Avoid spraying water directly on the flowers during flowering. Reduce watering during dormancy periods and refrain from watering during cold spells to keep the potting mix dry, resuming regular watering after the cold spell ends. -
High Temperatures: Phalaenopsis orchids prefer warm temperatures, with the optimal growth temperature ranging from 16°C to 30°C. Temperatures below 15°C or excessively high temperatures can cause orchid wilting.
Solution: During summer, control temperatures by moving orchids to shaded and well-ventilated indoor areas for cultivation. -
Excessive Sunlight: Phalaenopsis orchids thrive in shaded and well-ventilated environments. Prolonged exposure to direct sunlight can cause flower petals to wilt.
Solution: Provide shade as needed and avoid direct sunlight. Increasing light exposure during flowering periods benefits orchid blooming. -
High Fertilizer Concentration: High fertilizer concentration can also cause Phalaenopsis orchid flowers to wilt. Fertilize Phalaenopsis orchids following the principle of "less is more."
Solution: Avoid using concentrated fertilizers; instead, opt for diluted fertilizers. During the orchid's growth period in spring and summer, apply diluted liquid fertilizer every 7-10 days. Avoid fertilizing during the budding and dormancy periods, and consider nitrogen and potassium fertilization after flowering. During the flower stalk growth period in autumn and winter, apply diluted phosphate fertilizer every 2-3 weeks. -
Disease Factors: Diseases and pests can also cause Phalaenopsis orchid flowers to wilt, affecting their ornamental value.
Solution: Preventive measures should be taken against diseases and pests during Phalaenopsis orchid cultivation, and appropriate treatments should be applied. Common diseases include root rot and leaf spot, which can be treated with bactericides such as copper fungicides.
Above are the reasons for Phalaenopsis orchid flower withering. There are various factors that can lead to this issue, and orchid enthusiasts should address them promptly. Adequate ventilation is essential for the healthy growth of orchids.
