Why Phalaenopsis orchids drop their buds

1. Excessive nitrogen fertilizer

Cause: Phalaenopsis receives excessive water and fertilizer during its growth period. This causes the branches and leaves to grow too tall, making it difficult for nutrients to reach the flowers, causing the flower buds to fall.

Solution: This is usually caused by too much nitrogen fertilizer and a lack of phosphorus and potassium fertilizers. Phosphorus and potassium fertilizers should be added in time. However, when fertilizing Phalaenopsis during its flowering period, you should be cautious to avoid excessive fertilizer and root burns.

2. Insufficient light

Reason: Phalaenopsis has high requirements for light. Although it is suitable for growing in a semi-shady environment, long-term lack of light will cause the flower buds to fall off.

Solution: Place the Phalaenopsis in a location with diffuse light. Generally, in summer, plants can receive sunlight in the early morning and evening, while in winter, the sunlight is softer and plants can receive sunlight all day long.

3. The soil quality is too poor

Reason: Phalaenopsis grows best in acidic soil. Alkaline soil is not conducive to its growth and will cause the flower buds to fall.

Solution: When watering, you can add a small amount of ferrous sulfate. This solution has a good effect on improving soil pH, but the content should not be too high, generally around 0.05%. Too high a content is detrimental to the growth of Phalaenopsis.

4. The temperature is too low

Reason: Phalaenopsis needs to control the temperature during the flowering period. If the temperature is lower than 16℃, it will easily cause the flowers to fall.

Solution: Phalaenopsis can be cultivated in a greenhouse and the temperature should be controlled at 16-30℃. If you encounter cold weather outdoors, you need to bag the items to keep them warm.