What to do if the leaves of gardenia turn yellow
The web introduces the related introduction of gardenia leaves turning yellow and the reasons for yellow leaves of indoor potted gardenias, specifically as follows:
Gardenias are a favorite flower for many gardening enthusiasts because of their strong fragrance and sometimes large blooms, which can even be bigger than a fist, adding beauty to a home. However, it is common to encounter yellow leaves during maintenance. Today, let's explore why gardenia leaves turn yellow and what to do when yellow leaves occur.
Leaf veins still green but leaf flesh yellowish and white? It's iron deficiency!
If new leaves show green veins but the leaf flesh starts to turn yellow and white, and in severe cases, the entire plant's leaves become yellowish and white, it is essentially due to iron deficiency.
Solutions:
You can use ferrous sulfate. Apply 0.1% to 0.2% ferrous sulfate spray to the affected leaves or place ferrous sulfate directly on the surface of the potting soil, allowing it to gradually seep and be absorbed. For a 20cm pot, 1g is sufficient for the first time, and it should be used approximately every 20 days.
Leaf edges starting to dry out? Not enough watering!
If you find that the edges of your gardenia leaves are starting to dry out, with old leaves turning yellow from top to bottom and beginning to fall off, this indicates that the plant has been without water for too long, showing signs of drought and yellowing.
Solutions:
You can fill a tray with water and use a pot with holes at the bottom to allow water to be absorbed into the soil through the bottom holes. Additionally, spray water on the leaves every 3 days.
Leaf color dull and lackluster? Too much watering!
If during the plant's growth period, the leaves turn yellow-green, the young leaves are dull, and show a soaked yellowing, this is usually a case of waterlogging caused by excessive watering.
Solutions:
Gardenias are sensitive to waterlogging. If water remains in the tray under the pot after watering, pour it out and then remove the plant with the soil and place it in a shaded and well-ventilated area. Once the soil is dry, you can put the plant back into the pot and water it moderately, but not too much.