Causes and treatment methods for the yellow leaves of Strelitaria regina
As a representative plant of tropical customs, the yellowing problem of Strelitaria litgarica leaves puzzles many conservators. This ornamental plant, known as the "bird of paradise", will directly affect the overall ornamental value if its unique aesthetic feeling of Phnom Penh green leaves is damaged. This article will systematically sort out the three core incentives and provide actionable coping strategies. The harm caused by abnormal soil environment causes yellowing acid-base imbalance is reflected in the Strelitzica, which is native to an acidic soil environment. When the pH value of the medium exceeds 6.5, iron absorption obstacles will appear in the roots. In the early stage, network yellowing appeared between the veins, and in the later stage, it developed into chlorosis of the entire leaves, especially in new leaves. Soil improvement operation steps Remove hardened soil masses after removing the pot, mix peat soil with pine needles and rotten leaves (ratio 2:1), and add 5% sulfur powder to adjust the pH value. After changing the basin, cooperate with watering 1000 times ferrous sulfate solution once a month for 3 months. Treatment plan for unbalanced nutrient supply, identification of symptoms of nutrient deficiency, characteristic nitrogen deficiency causes uniform yellowing of old leaves, insufficient potassium causes leaf margins to scorch, and magnesium deficiency causes intervenous spots. Plants that have not been potted for a long time are prone to trace element deficiency. Scientific fertilization practices apply nitrogen, phosphorus and potassium balanced slow-release fertilizers (20-20-20) every month during the growing season, combined with foliar spraying of iron chelate fertilizer. Stop fertilizer during winter dormancy to avoid salt damage. Potting plants for more than three years requires thorough replacement of the substrate. Key points for light intensity control during the development of light damage. Direct light exceeding 50,000 lux at noon in summer will cause burned spots on the leaves, which will be grayish white and translucent at the beginning, and turn to yellow-brown and dry in the later stage. Long-term exposure can cause overall yellowing of the plant. The lighting management implementation strategy builds a 50% sunshade net to regulate lighting and maintains the ideal range of 25,000 - 40,000 lux. Receive full sunshine in the morning and shade protection from 11-15 o'clock. Direct light is acceptable all day in winter.
By systematically checking the three major factors of soil pH, nutrient supply, and light intensity, more than 90% of the yellow leaf problem can be effectively solved. Regularly observing the status of the plant and adjusting the maintenance plan based on seasonal changes can keep Strelitaria litgarica green all year round. Special reminder is to maintain an environment above 15℃ during the low temperature period in winter to avoid the occurrence of cold damaged yellow leaves.