Flower
Bud Drop
Flower buds drop before opening, due to environmental change or nutrient deficiency
Overview
Bud drop is one of the most frustrating problems in ornamental plants — buds form but fall off before opening. Main causes include: sudden environmental change (a newly purchased plant adjusting to a new home), insufficient light reducing photosynthesis to support blooming, improper watering (both over and underwatering cause drop), nutrient deficiency especially phosphorus and potassium, and overly dry air.
Symptoms
Flower buds suddenly turn yellow or brown and fall off at the slightest touch. Fallen buds show an abscission layer at the base; cutting them open reveals incompletely developed or discolored internal flower organs. A few remaining buds may open but produce small, pale flowers. Buds drop sequentially from different locations rather than all at once.
Treatment
Move the plant to a stable environment with 4-6 hours of indirect light but no direct sun. Increase phosphorus and potassium fertilizer (monopotassium phosphate diluted 1000x as a soil drench plus foliar spray) every 10 days. Keep soil evenly moist but not waterlogged. Increase humidity to around 60% using misting or pebble trays. Already yellowed buds will not recover — remove them to conserve energy.
Prevention
Avoid frequent moving or rotating during bud formation. Begin phosphorus-potassium fertilization before budding; reduce nitrogen. Maintain stable temperature and humidity. Choose flowering plant varieties suited to indoor conditions. Leave newly purchased plants in their chosen spot without moving.
