Reasons for yellowing daffodil leavesIf the leaves of daffodils turn yellow during cultivation, it must be related to the growth environment and whether your own maintenance methods are appropriate. Let's take a look: Reason 1: Unreasonable temperatureNarcissus is a greenhouse plant of the autumn-planted bulbous variety. It prefers plenty of light but also avoids direct sunlight. When the temperature is too hot and the daffodils are exposed to the sun without proper shade, the leaves of the daffodils can easily dry up and turn yellow. Daffodils are not cold-resistant and are afraid of cold. When the temperature is too low, they are easily frostbitten, causing the leaves to turn yellow, and in severe cases, they may wither and die. Therefore, when caring for daffodils, you must follow their growth habits and keep the temperature balanced and warm. Reason 2: Inappropriate water and soilNarcissus prefers a humid environment and requires acidic water and loose, fertile, acidic sandy soil to grow. When watering and maintaining the plant, if you only use ordinary water and do not pay attention to the iron content in the water, the leaves will gradually turn yellow due to lack of iron and nutrients. If the soil is not properly acidic during planting and maintenance, it will also lead to a lack of nutrients needed for growth and cause the leaves to turn yellow. Reason 3: Excessive fertilization or no fertilization for a long timeAlthough daffodils like fertilizer, fertilization should be done in moderation. When too much fertilizer is applied, new leaves will grow thick and uneven, while old leaves will become dry and yellow. If no fertilizer is applied for a long time, especially nitrogen fertilizer, the soil will lack nitrogen and other nutrients, and the leaves will gradually wither and turn yellow. Reason 4: Pests and diseasesDuring the cultivation process, daffodils are most likely to suffer from leaf spot disease caused by fungi and other pathogens. Leaf spot disease will cause yellow spots to appear on the leaves, which will gradually expand and spread throughout the leaves. Pests include scale insects, red spiders, etc. These pests can cause parts of the leaves to turn yellow. How to prevent and treat yellowing of daffodil leavesOnce the reason why daffodil leaves turn yellow is found out, it will be easy to prevent and control! First: Control the growth temperatureHow to control the growth temperature of daffodils? Don’t worry. When it is hot, you just need to move the daffodils to a well-ventilated and cool place in time to avoid strong light. The leaves will gradually return to normal. Second: Pay attention to watering and soil selectionWhen planting daffodils, be sure to choose acidic soil to ensure the nutrients needed for growth, and alum fertilizer water should be applied during the growth period of the daffodils. This way the leaves will not turn yellow due to iron deficiency. Third: Apply fertilizer on time and in the right amountWhen caring for daffodils, be sure to apply fertilizer on time and in the appropriate amount. If you apply too much fertilizer, you can try changing the water to let the excess fertilizer flow away, or immediately turn the pot over and rinse the root area with clean water. If the leaves turn yellow due to long-term lack of fertilizer, you can use new culture water to apply thin, decomposed liquid fertilizer or compound flower fertilizer. This way, you can save the yellowed leaves and get them to grow again. Fourth: Pest and disease controlWhen pests and diseases appear, the most effective method is to spray pesticides to completely eliminate them. 【Flower Growing Encyclopedia】is a contracted author of Toutiao |
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