Reasons Why Narcissus Flowers Don't Bloom
The narcissus is loved for its elegant and refined temperament, but many flower enthusiasts often face the problem of only growing leaves without blooming. This article will systematically analyze the causes from key dimensions such as lighting, water quality, and bulb planting, and provide operable solutions to help you easily cultivate fragrant narcissus flowers.
Core Factors Analysis of Narcissus Not Blooming
Management of Light Intensity and Duration
As a typical short-day plant, narcissus requires 4-6 hours of scattered light daily. Experimental data shows that when the light intensity is below 2000 lux, the rate of flower bud differentiation decreases by 60%. It is recommended to use a lux meter to monitor, placing it on a south-facing windowsill in spring and winter, and moving it to a semi-shaded area in summer and autumn to avoid scorching the leaves with strong midday sunlight.
Hydroponic System Optimization Solutions
The water quality pH should be maintained between 6.0-7.5, with an EC value less than 0.8 ms/cm. It is recommended to use the "shallow basin + ceramsite" hydroponic method, changing the water every 3 days with water that has been sun-dried for 24 hours, keeping the water level at 2/3 of the root system. Adding 3-5 drops of special nutrient solution during water change can increase the blooming rate by 38%.
Criteria for Selecting Quality Bulbs
Choose three-year-old bulbs with a circumference greater than 16 cm, with a deep brown surface and no mold spots. Anatomical studies show that bulbs with a single flower bud count of ≥4 have a blooming rate of up to 92%. It is recommended to press the base of the bulb when purchasing, with those that are solid and elastic being the best.
Precise Regulation of Phenophase
In the Northern Hemisphere, it is best to start hydroponics from late October to early November when the average daily temperature of 15-18℃ is most conducive to flower bud differentiation. The blooming period can be controlled through "low-temperature vernalization + light adjustment": store the bulbs in an 8-10℃ environment for 20 days, and maintain a day-night temperature difference of more than 8℃ after hydroponics.
By mastering these scientific cultivation methods, even beginners can successfully cultivate narcissus with abundant branches. It is recommended to use plant growth lights and temperature and humidity meters for precise environmental control, allowing the凌波 (Lingbo)仙女 (fairy) to bloom as promised every year.