Solutions for Preventing Flower Drop in Bougainvillea
Bougainvillea, with its vibrant and colorful flowers, is a favorite among horticulture enthusiasts. However, the issue of flower drop during the blooming period often troubles cultivators. This article systematically analyzes the deep reasons for bud shedding from multiple dimensions such as environmental regulation and water and fertilizer management, and provides scientific countermeasures.
Key Points of Environmental Regulation
Sudden Temperature Drop in Winter
As a tropical plant, bougainvillea can only bloom normally in an environment of 8-15°C. When the day-night temperature difference exceeds 10°C, the plant will have a stress response and shed buds proactively. A three-layer protection method can be used: placing on a sunny window sill indoors + using a transparent insulation bag + placing a foam board under the pot to maintain a stable night temperature above 12°C.
Water Management Techniques
Water Control Standards During the Blooming Period
During the blooming period, it is necessary to maintain soil moisture at 40%-50%. Use the 'finger touch method': insert the index finger into the soil 2 knuckles deep, and add 50ml of water when only the fingertips are slightly moist. If waterlogging-induced flower drop has occurred, it is recommended to use the siphon method: tilt the pot at a 45-degree angle and use a straw to guide out the accumulated water at the bottom, combined with low-speed fan circulation for ventilation.
Nutrition Supply Plan
Control of Fertilizer Concentration
Diluted phosphorus-potassium liquid fertilizer at a ratio of 1:3000 should be used during the blooming period, applying once every 10 days on the leaves. If excessive fertilizer is applied, immediate emergency treatment is required: flush the potting soil with warm water at 35°C three times consecutively, then insert 15-20 holes in the potting soil with a bamboo skewer to accelerate moisture evaporation, avoiding direct sunlight for 72 hours.
Through the协同 action of temperature gradient management, precise water control, and scientific fertilization, the rate of abnormal flower drop can be effectively reduced by over 90%. It is recommended to use a temperature and humidity monitor, recording plant growth data every 3 days to form a personalized care plan, allowing the bougainvillea to bloom continuously for 120 days or more.