Gardenia Yellowing Disease
For most women, here are some basic knowledge about the yellowing disease of gardenias, followed by a comprehensive introduction.
Symptoms and Pathological Changes of Gardenia Yellowing Disease
Yellowing disease is an important physiological disease of gardenias. It is widely distributed, especially common in areas north of the Yangtze River. The disease mainly affects the leaves, starting from the top young leaves, causing the leaves to fade in color, the mesophyll between the veins to turn yellow, followed by the veins also fading, making the entire leaf turn yellowish-white. Eventually, brown spots appear on the leaves and the tips and edges start to wither inward.
When the disease is mild, only the young leaves fade, while in severe cases, the whole plant turns yellow. The yellowing disease of gardenias is caused by a deficiency of the micronutrient iron, often due to being planted in alkaline soil, which makes the iron element fixed into an insoluble state, making it difficult for the plant to absorb and utilize. Generally, the disease is more severe in winter and spring than in summer.
Prevention and Control Methods for Gardenia Yellowing Disease
1. The cultivation site should be selected with well-drained, slightly acidic, and fertile soil.
2. Around the roots of the affected plants, punch holes and pour in a dilute solution of ferrous sulfate (30-50 times), or spray the leaves with a 1000-fold dilution of ferrous sulfate 2-3 times, which can make the leaf color turn green. This completes the introduction to the yellowing disease of gardenias.
This article shares the complete introduction to the yellowing disease of gardenias for everyone to learn and understand!