What to Do When Phalaenopsis Orchid Buds Drop? Cause Analysis and Prevention Methods

Causes of bud drop in Phalaenopsis orchids:

1. Improper lighting: potted Phalaenopsis orchids generally need one third of the light required by terrestrial orchids, with 50% in spring and autumn; 20% to 30% in summer.

2. Uneven watering: for watering Phalaenopsis orchids, the immersion method is generally used, that is, use a bucket, fill it with water, immerse the potted Phalaenopsis orchid in the water for 2 to 3 minutes, then lift it out.

3. Insufficient humidity: Phalaenopsis orchids like high humidity, and the relative humidity should be maintained at 70% to 80% year-round. In dry seasons and summer, spray the leaf surfaces 2 to 3 times a day; alternatively, use a large saucer, fill it with water, raise the potted Phalaenopsis orchid on wooden blocks or small stones, and place it in the saucer to maintain humidity around the pot.

4. Infrequent fertilizing: Phalaenopsis orchids grow relatively quickly, so the amount of fertilizer needs to be slightly greater, following the principle of applying thin fertilizer frequently. Start fertilizing in spring, applying a dilute liquid fertilizer mainly based on nitrogen fertilizer once a week, and pause fertilizing in hot weather; after entering autumn, the plants enter the flower bud differentiation and formation stage, and it is suitable to apply a dilute liquid fertilizer mainly based on phosphorus and potassium fertilizer once every 12 to 14 days; stop fertilizing after buds appear, otherwise it will cause bud drop.

5. Damage from pests and diseases: Phalaenopsis orchid flower buds are easily attacked by aphids, and attention should be paid to catching and killing them.