Some friends in the process of cultivating peony flowers, it is inevitable to encounter the problem of yellowing leaves, watching the once green leaves become "yellow-faced women", can not help but worry. So, what is the reason why the leaves of peony flowers are yellow? What is the corresponding solution?
1.Overwatering: Although peony flowers like a humid environment, they are afraid of waterlogging. If the water is frequent or the amount of water is too large, the soil drainage is poor, which can easily lead to a lack of oxygen in the roots, causing root rot, resulting in yellowing of leaves.
2.Insufficient watering: Long-term drought and lack of water, the root system of peony flowers can not absorb enough water and nutrients, and the leaves cannot get enough water**, the phenomenon of yellow leaves will appear.
1.Too much light: Although peony flowers like light, they are afraid of direct sunlight in summer, and too strong sunlight will burn the leaves, making them appear yellow-brown patches, and in severe cases, the whole leaves will turn yellow.
2.Lack of light: Insufficient light, peony flowers can not carry out effective photosynthesis, affecting the synthesis of nutrients, resulting in dull color of leaves, and even yellowing.
3.Temperature discomfort: Peony flowers need a lower temperature during the dormant period in winter, and too high indoor temperature or a hot and cold environment may cause yellowing of the leaves.
1.The pH of the soil is not suitable: Peony flowers prefer a neutral or slightly alkaline soil environment, if the soil is too acidic or too alkaline, it will affect the absorption of nutrients by the root system, resulting in yellowing of leaves.
2.Nutrient deficiencies: When there is no fertilization for a long time or insufficient fertilization, especially when there is a shortage of nitrogen fertilizer, the leaves of peony flowers cannot obtain enough nutrients, which is manifested as the color of the leaves is pale and yellow.
1.Pest and disease infestation: Peony flowers are attacked by aphids, red spiders and other pests, or infected with bacteria such as gray mold, black spot, etc., which will also cause the leaves to turn yellow.
2.The growing environment is harsh: Adverse environmental factors such as poor ventilation, poor air quality or toxic gas emissions around can also make peony flower leaves yellow.
1.Observe the yellow leaf characteristics
If the leaves turn yellow and have a soft texture, it may be a sign of lack of water or fertilizer.
If the edge of the leaf is yellow and the center remains green, it may be due to too much sunlight or unsuitable soil pH.
If there are yellowish-brown spots or black spots on the leaves, accompanied by wilting, it may be caused by pests and diseases.
2.Check the environmental conditions
Soil moisture is observed, dry soil is usually an indication of water shortage, and wet and heavy clay may be too wet.
Check the light for signs of burn on the leaves in direct sunlight.
Be aware of temperature changes, extreme heat or low temperatures may cause yellowing of the leaves.
3.Assess soil condition
The pH of the soil can be measured to determine whether the pH is unsuitable.
Observe the condition of the root system, if there are rotten roots or black roots, it may be overwatering or poor soil drainage.
4.Look for evidence of pests and diseases
Carefully inspect the backs, stems and roots of the leaves for signs of insect infestation or germ erosion.
5.A look back at the history of conservation
Review recent watering, fertilization, light, and temperature control to see if there are any major changes or oversights.
Through the above multi-dimensional observation and analysis, you can preliminarily judge the reason for the yellow leaves of peony flowers.
The yellowing of peony leaves is often the result of a combination of factors. In the process of breeding, we should closely observe and analyze the reasons for the occurrence of yellow leaves, and start from water management, light and temperature control, soil improvement, reasonable fertilization, pest control, etc., scientifically and reasonably adjust the maintenance measures, so that the peony flowers can re-show the charm of their national color and fragrance.