The reason why chrysanthemums do not bloom
As a famous traditional flower in China, its flowering effect directly affects its ornamental value. Many flower friends often encounter the problem of chrysanthemums only growing leaves but not blooming. This article provides systematic solutions to the five core problems of chrysanthemums not blooming and combines professional maintenance experience. 1. Variety characteristics and flowering period control 1.1 Variety differences affect different chrysanthemum varieties. There are significant differences in flowering period: early chrysanthemum blossoms in September, autumn chrysanthemum blooms in November, and cold chrysanthemum can be extended to December. It is necessary to confirm that the varieties correspond to the flowering period to avoid misjudgment. 1.2 Flowering management techniques can change the flowering period through temperature control: 18-22℃ is the most conducive to flower bud differentiation, and above 25℃ will delay flowering. Using a greenhouse can advance the flowering period by 2-3 weeks. 2. Core Points of Light Management 2.1 Photoperiod Control Chrysanthemum is a typical short-day plant and needs to meet the requirements of less than 12 hours of light per day for 45 days. Light protection can be used: cover with black cloth every day from 17:00 to 8:00 the next day. 2.2 Light intensity regulates the growth period requiring 20,000 - 30,000 lux of light, and the flower bud differentiation period reduces to 15000lux. Use a sunshade net to adjust to ensure leaf photosynthesis while avoiding strong light burns. 3. Collaborative management plan for water and fertilizer 3.1 Scientific watering methods adopt the principle of "seeing dry, seeing wet": watering thoroughly when 2cm of topsoil is dry. Moderately control water during the flower bud differentiation period and maintain the substrate humidity of 40%-50% to stimulate flower formation. 3.2 The precise fertilization strategy uses N-P-K=20-10-10 fertilizer during the vegetative growth period, and switches to 5-20-25 high-phosphorus formula during the budding period. It is recommended to combine seaweed essence and amino acid foliar fertilizer with application twice a month. 4. Plant morphology control technology 4.1 Systematic pruning plan Picks the first time when the seedling height is 15cm, retaining 4-5 leaves. Remove the side buds after the buds appear, and retain 1 main bud for each branch. Remove old leaves at the base in time to improve ventilation and light transmission. 4.2 The physical flowering promotion measure adopts ringcutting to promote flowering: ring-peeling the bark of 0.5cm wide at a point 10cm away from the soil surface and wrapping it with plastic wrap. This method can block nutrient backflow and promote flower bud differentiation.
Comprehensive use of environmental regulation, water and fertilizer management, and plant pruning, combined with the understanding of variety characteristics, can effectively solve the problem of chrysanthemum not blooming. It is recommended to establish a maintenance log to record data such as temperature, light, and fertilization, and gradually optimize the maintenance plan so that the chrysanthemums bloom as scheduled.