Why do the leaves of gold-edged winter daphne turn yellow during care?

Gold-edged winter daphne is a variety of winter daphne and is one of the finest among winter daphnes. Gold-edged winter daphne is famous for its “four excellences” of color, fragrance, posture and charm, and is deeply loved by the public. But when cultivating gold-edged winter daphne, why do the leaves turn yellow?

1. Soil causes

Winter daphne likes to grow in loose, nutrient-rich soil. If it is planted in slightly alkaline soil, its leaves will gradually turn yellow. When this happens, the plant should be moved into slightly acidic soil in time, or an acid-loving nutrient solution should be watered into the soil regularly.

2. Fertilization causes

Winter daphne likes fertilizer, but the amount must be right and fertilization must be frequent. If too much fertilizer is applied and water is not given in time, fertilizer damage is easily caused, leading to yellowing leaves in gold-edged winter daphne.

3. Low temperature causes

If the temperature is too low, it will damage the plant and cause the leaves to turn yellow and die. Therefore, before the frost in winter, move it indoors to a sunny and airy place for care, and the temperature must be kept above 5°C at the lowest.

4. Light causes

In summer, the plant should be placed in a cool and ventilated environment, or in an environment without direct sunlight. If the sunlight is too intense or there is no sunlight, the leaves will turn yellow.

5. Watering causes

Gold-edged winter daphne is a plant that is not tolerant of waterlogging. If watering is not controlled on ordinary days, the leaves will become wilted and drooping. Therefore, when watering on ordinary days, the principle of watering when wet and drying when dry should be mastered.

At ordinary times, pay attention to observing the leaves of winter daphne. If the leaves are upright and facing upward, it means fertilizer and water are normal; if the leaves droop, then the fertilizer is too concentrated and too much water has been given. The cause should be identified and corresponding measures taken.

6. Pest causes

The main pests harmful to gold-edged winter daphne are aphids and scale insects, which mostly appear in dry and hot climates and should be prevented and controlled early. The main disease is mosaic disease caused by a virus. Infected plants show colored spots and deformities on the leaf surface, poor flowering and stunted growth. Once found, they should be dug out with the roots and burned with fire.

To prevent pests and diseases of gold-edged winter daphne, flower garden management should be strengthened and the following points should be achieved:

1. Strictly control the movement of diseased seedlings and the use of diseased branches to propagate young plants;

2. Fertilize reasonably and water scientifically. Nitrogen fertilizer should not be applied too heavily. Appropriately increase the application of phosphorus and potassium fertilizers to enhance the disease resistance of the plant;

3. Do a good job of flower garden sanitation. Diseased plants, dead branches and fallen leaves, and weeds in the flower garden should be removed in time to eliminate the source of pathogenic organisms.

In addition, the roots of gold-edged winter daphne are rather special, because they are fleshy aromatic roots with a sweet taste and are easily harmed by some bacteria, especially easily attracting earthworms, affecting the normal growth of the root system. Before potting, disinfected soil must be used. Burying crushed garlic heads in the potting soil of gold-edged winter daphne can also kill earthworms and some bacteria, preventing the occurrence of pests and diseases in gold-edged winter daphne.

Warm reminder: Gold-edged winter daphne has clustered branches and strong sprouting ability. Winter daphne is relatively tolerant of pruning. Generally, before germination, densely growing small branches can be pruned away, leaving a certain amount of space to facilitate ventilation and light transmission. Winter daphne should be shaped and pruned after flowering, cutting short the branches that have bloomed, and cutting off leggy branches, overlapping branches, overly dense branches, crossing branches and other branches that affect the beauty of the tree shape, so as to maintain a graceful form.