Why do the leaves of daffodils turn yellow

Causes and solutions to the yellowing of daffodil leaves.

Reason 1: The temperature is unreasonable.

Narcissus is an autumn bulb greenhouse plant that prefers plenty of light, but also taboos direct sunlight. When the temperature is too hot, the daffodils are also exposed to the sun, and without proper shading, it is easy for the daffodils to wither and turn yellow.

Narcissus is not cold-tolerant, afraid of cold, when the temperature is too low, daffodils are easy to frostbite, resulting in yellowing of the leaves, which will dry to death in severe cases.

Solution: Control the growth temperature.

When it is hot, you only need to move the daffodil to a well-ventilated and cool place in time, away from strong light, and the leaves will gradually return to normal. When the temperature is low in winter, you should pay attention to adjust the room temperature in time. Therefore, the maintenance of narcissus must be based on its growth habits, and the temperature must be kept balanced and warm.

Reason 2: Improper soil and water.

Narcissus prefers moist environments and grows on acidic water and loose, fertile acidic sandy soils. When watering and maintaining, only ordinary water is used, and the iron content in the water is not paid attention to, which will also cause the leaves to gradually turn yellow due to iron deficiency and lack of nutrients. Soil cultivation and maintenance without suitable acidic soil can also lead to a lack of nutrients for growth and yellowing of leaves.

Solution: Pay attention to the choice of watering and soil.

When planting daffodils, it is necessary to choose acidic soil to ensure the nutrients needed for growth, and to water alum fertilizer during the growth period of daffodils. This way, the leaves will not turn yellow due to iron deficiency.

Reason 3: Excessive fertilization or no fertilization for a long time.

Although daffodils prefer fertilizers, if they are not fertilized for a long time or do not change the pot and water, especially nitrogen fertilizer, the soil will be deprived of nitrogen and other nutrients, and the leaves will gradually wither and turn yellow. But fertilization should also be done in moderation, when fertilization is excessive, new leaves will grow hypertrophied, the leaf surface will be uneven, and old leaves will dry out and turn yellow.

Solution: Apply fertilizer on time and in the right amount.

If there is too much fertilizer, the fertilization should be stopped immediately, the amount of water should be increased, so that the fertilizer is lost, or immediately poured into the pot, rinse the bulbs with water and then replant them in the pot.

If you haven't fertilized for a long time, you can use new culture water to apply thin rotting liquid fertilizer or compound flower fertilizer. This way you can save the yellow leaves and grow them back.

Reason 4: Pests and diseases.

Leaf spot disease caused by fungi and other pathogens is easy to cause local necrosis of leaves, yellow spots or plaques appear, and in severe cases, the whole leaf withers yellow and falls off, and yellow-green mottled spots appear on the leaves after being infected by mosaic virus; Insect pests include scale insects, red spiders, etc., which will cause the leaves to partially turn yellow, or even the whole leaf to yellow and fall off.

Solution: Pest control.

When pests and diseases appear, the most effective way is to spray drugs to completely eliminate pests and diseases.

The yellowing of the daffodil leaves may be due to too little light, so it is necessary to move the plant to a place with sufficient scattered light for maintenance. When hydroponic daffodils, the water quality is not clean enough will also make the leaves yellow, and the clean water should be replaced in time, and the lack of nutrition will also make the leaves yellow, so it is necessary to replenish fertilizer in time.