As the autumn breeze brings coolness, the earth is draped in a golden yellow garment, among which the most attention-grabbing are the blooming chrysanthemums. Chrysanthemums have been the favorites of literary and artistic circles since ancient times, enchanting with their unique temperament and diverse varieties, becoming a beautiful landscape in autumn. Behind this beauty, what secrets are hidden in the blooming of chrysanthemums and the yellowing of their leaves?
The Secret of Chrysanthemum BloomingAs a traditional ornamental flower in China, the blooming process of chrysanthemums is a wonder of nature. According to relevant data, the blooming period of chrysanthemums is generally about 8 to 10 weeks, with the specific time affected by factors such as variety, climate, and soil.
The flower of chrysanthemum develops gradually from the bud, and its blooming process can be roughly divided into the following stages:
1. Bud Formation: The buds of chrysanthemums form gradually during growth, at this time the buds are green and shaped like a calligraphy brush.
2. Bud Swelling: As the temperature gradually rises, the buds begin to swell and the color gradually changes to light yellow.
3. Petal Unfolding: When the buds reach a certain size, the petals begin to unfold, marking the full bloom stage of chrysanthemums.
4. Flower Withering: After the chrysanthemum has bloomed for a period, the petals begin to wither, and the flower gradually dries up.
The reason why chrysanthemums can bloom in autumn is closely related to their physiological characteristics. Chrysanthemums are perennial herbaceous plants with developed root systems and strong cold resistance. In autumn, chrysanthemums absorb nutrients from the soil to prepare for blooming.
Reasons for Chrysanthemum Leaf YellowingLeaf yellowing in chrysanthemums is a common phenomenon in autumn, and the main reasons are as follows:
1. Climatic Factors: As the temperature gradually drops in autumn and the day-night temperature difference is significant, the transpiration of chrysanthemum leaves is reduced, leading to water loss and resulting in leaf yellowing.
2. Light Factors: As the duration of sunlight decreases in autumn, the photosynthesis of chrysanthemum leaves is weakened, leading to insufficient nutrient supply and causing leaf yellowing.
3. Soil Factors: Chrysanthemums have high soil requirements. If the soil is poor or compacted, it will affect the absorption of nutrients by the roots, leading to leaf yellowing.
4. Diseases and Pests: Chrysanthemums are susceptible to diseases and pests during growth, such as powdery mildew and aphids, which can cause leaf yellowing and withering.
To prevent leaf yellowing in chrysanthemums, the following measures can be taken:
1. Timely Watering: Keeping the soil moist helps the chrysanthemum roots absorb nutrients.
2. Fertilization: Applying organic and compound fertilizers in a timely manner during the growth of chrysanthemums provides adequate nutrients.
3. Disease and Pest Control: Regularly inspect the chrysanthemum plants and treat any diseases or pests promptly.
4. Pruning: Prune the chrysanthemum leaves in a timely manner to maintain good ventilation and light, which benefits plant growth.
Blooming and leaf yellowing in chrysanthemums are common phenomena in autumn. Understanding the reasons behind them helps us take better care of chrysanthemums, allowing these beautiful flowers to display even more enchanting charm in the autumn days.