1. When watering, add 1-3 drops of vinegar, especially for Gardenia gardenias in the north. Alkali soil is the main reason for gardenia yellow leaves. Or pour 0.2% ferrous sulfate.
New leaves and old leaves are like this, it is obvious that the soil is slightly alkaline.
2. Another reason is that there is more water.
As shown in the figure below, the bottom leaves turn yellow, and the top leaves remain unchanged.
And the veins are green, only the flesh is yellow, that is to water more
Loosen the basin soil, put it on the sunny balcony, open the window for ventilation, and let the water in the soil evaporate as soon as possible. At the same time, it is a waste of nutrition to take off the yellow leaves.
After that, the maintenance and watering should be appropriate. If you can't water, use stupid methods. Find a small stick and insert it into the soil for 3-4cm, leave it for 10 minutes, and then pull it out. If the stick is just wet with a little water, you can water it. You can't wait until the stick is completely dry to water it. It's not good for gardenia, after all, gardenia likes to be wet.
In addition, after watering, spray water on the Gardenia leaves every day. Gardenia is in the original South. Imagine the humidity in the south, at least it must be more than 50%!
3. More fertilizer is applied. This symptom is easy to recognize. Look at the yellow leaves. If the veins turn yellow and the edges are a little green, it's more fertilizer.
In the picture below, the veins of the leaves have completely turned yellow, while the mesophyll can see part of the green.
There are two ways to deal with fat yellow. One is to irrigate the root with big water, that is, after pouring through the water, water it for another 5-10 minutes to let the nutrients in the soil flow out with the flow of water. The other is to take off the pot and change the soil for Gardenia, remove part of the old soil, and then put it in the pot again. Don't beat all the soil and then put it in the pot, so Gardenia won't survive easily.
1. As a result of the great changes in the environment, the newly bought Gardenia full of flower buds will surely fall off, which requires a process of basin taking. This period of time to keep the soil moist, do not fertilize, put in the scattered light place to maintain, until the basin will not fall again.
2. The water is big, which is the most common reason. You can think about whether you have watered a little more recently. Generally speaking, in northern spring, gardenia can be watered 2-3 times a week, which is almost the same. Usually, you can spray water on the leaves and around the Gardenia to increase the air humidity.
3. There is not enough fertilizer. Of course, the flower buds keep dropping. You can water the bean cake water once a week, or wash the rice water. Of course, you need to finish the ripening, or add a little quick acting fertilizer.
4. The light is too strong. Gardenias don't need special strong light. Just put them in the place where they can reach the sun in the morning, and scatter the light for the rest of the time.
If there is no flower bud, it is not enough phosphorus and potassium fertilizer. Before flower bud differentiation, it is better to apply more phosphorus and potassium fertilizer, and nitrogen fertilizer must be less! Less! More will suppress flower bud differentiation! Phosphorus and potash fertilizer can be bought professionally, or it can be used to cook fish and shrimp shells, fish intestines, egg shells, rice washing water, etc. Once a week.
In spring, we should cut off all the long, thin and dead branches of gardenia, which are also consumed by nutrition. If your Gardenia grows in a big way, don't hesitate to prune it!
The Cross branches, overlapping branches and drooping branches listed in the following figure are to be cut off.
Gardenia is dormant or semi dormant in winter, and the temperature is about 5 ℃. Room temperature is too high, affect flowers and trees fully dormant or early budding leaves, consume a lot of nutrients, the next year will be easy to grow weak, do not bloom.
In this case, it is necessary to apply fertilizer, and it must be a balanced fertilizer of nitrogen, phosphorus and potassium. For example, bean cake water, chicken manure and so on can be used
