Why do Gardenia Leaves turn Yellow?
One common problem that most gardenia owners experience is the yellowing of the leaves.
Gardenia leaves turns yellow because of various reasons such as the soil’s acidity level, lack of nutrients, lack of moisture, cold temperature, pest infestation and lifespan.
First thing to consider when planting gardenias is to get a soil test done to check the soil for its pH level. The results will determine whether there is too much or not enough acid in the soil. Gardenias require a Ph level between 5.0 and 6.5. Without the proper pH level, these plants won’t be able to absorb the proper minerals in the soil like manganese, iron etc. causing mineral deficiency in the plant which will eventually result in the leaves turning yellow. If the soil lacks acid, you can use acid fertilizers or home remedies such as pickle juice and diluted vinegar to add to the soil.
Minerals deficient in the soil can also be determined in a soil test. In case there are mineral deficiencies, you can remedy this by adding certain fertilizers or use liquid sprays. For example, if the soil lacks iron, you can add iron-rich fertilizer to the soil or spray a liquid iron to the foliage.
Moisture is very important to gardenias. They need proper drainage system to keep them moist but avoid overwatering the soil as it is also harmful to the plant. Lack of water and too much water can cause the leaves to turn yellow.
Gardenias need to have at least 8 hours of sunlight. The ideal temperature is at a constant level of 65 to 70 degrees during daytime and 60 to 62 during night time. Any fluctuations in the temperature and cold temperature can cause yellowing of the leaves.
Keep your gardenias pest-free. Watch out for ‘sooty-mold, black spots on the leaves. In case you have pests, use organic pesticides to eliminate them.
In conclusion, growing gardenias will require a lot of effort and patience. Without proper maintenance and care, their leaves will turn yellow and they will eventually die.