The causes of gardenia bud blackening.

The reason of gardenia bud blackening;

1, the flower buds are polluted by the fertilizer solution.

Gardenia needs fertilizer with high phosphorus and potassium content for supplementary cultivation after budding. However, if you spray the fertilizer solution directly on the bud because you are in a hurry to see the flowers, it will burn the bud because of the high concentration of the fertilizer solution. Even the diluted fertilizer solution itself has a certain concentration, which is very high for the delicate gardenia buds. When the bud was burned to death, it naturally turned black.

2. The temperature is too low

Gardenia is a shade-tolerant plant, but it also needs photosynthesis to synthesize nutrients. If gardenia is often cultivated in a cool place at low temperature, the buds will turn black and fall off.

3. Overwatering

The flower buds of gardenia show that it is in the growing period and needs a lot of water and fertilizer, but everything should be in moderation. If the water given to gardenia exceeds its demand, the root of gardenia will fester, causing the bud to turn black and fall off.

The reason why gardenia leaves have yellow spots;

First, gardenia is watered too much or too little, the roots can't absorb nutrients and water normally, and the leaves will turn yellow. If there is a shortage of water, water the leaves a little, and spray water on them properly every day to keep them moist without water accumulation. If there is water in the basin, take it out of the basin and keep it in the shade.

Second, if the temperature of the breeding environment is too low, plants will be frostbitten and the leaves will turn yellow. When the temperature is low, we should raise the temperature, try to put it indoors in winter, and don't let the cold wind blow the plants directly. In addition, it is necessary to keep warm at night in early spring.

Thirdly, if gardenia is exposed to strong light for a long time in the maintenance process, it will also cause the leaves to turn yellow and fall off. In summer, the sun is strong, so it is necessary to do a good job of shading the sun. Don't directly expose yourself to the hot sun, or keep it in the shade for maintenance. Usually we just need to ensure enough scattered light to carry out maintenance.