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Hello, this is a fungal infection and it is recommended that you spray some antibacterial medicines. And cut off the leaves. It will be fine soon.
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This is with hoarfrost, you can spray some carbendazim to effectively remove the fungus.
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The leaves of the gardenia are wilting, and the two reasons for the lack of liquid are solved in time, and the stall is troubled.
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Soil discomfort: Gardenia yellow leaves may be caused by too heavy or alkaline soil, the soil should be changed as soon as possible, and the ferrous sulfate solution should be watered regularly during the maintenance period.
Discomfort of light: Long-term exposure to the sun or placed in the shade is easy to yellow leaves, and more astigmatism should be done.
Lack of water: Gardenia yellow leaves may also be a lack of water and not drought tolerant, so they should be hydrated in time.
The temperature is too low: it is cold-resistant, if the temperature is not well controlled in winter, it will be frozen, resulting in yellow leaves, which should be kept warm.
First, the soil is lacking and uncomfortable.
Gardenias have certain requirements for the soil during the growth period, like soft, breathable, fertile and slightly acidic soil, afraid of heavy clay soil and alkaline soil, if the soil is not suitable will cause the leaves to turn yellow, and even affect flowering. If it is caused by soil problems, it is necessary to change the soil as soon as possible, and the cultivation in the northern region should also be regularly watered with ferrous sulfate solution or vinegar solution, which can maintain the acidity of the soil, avoid too much alkalinity, and promote the growth of young leaves.
Second, the light is uncomfortable.
Gardenias have a certain shade tolerance and are not sun tolerant. Prolonged exposure to shade or exposure to the sun during the growing period will cause the leaves to turn yellow. If it is caused by lack of light, it should be moved to a well-lit environment as soon as possible, and more light should be exposed to astigmatism to promote better photosynthesis.
If it is sunburned by long-term exposure to the sun, it should be shaded, especially the strong light in summer, which must be blocked in time.
3. Lack of moisture.
Gardenias prefer moist environments and are not drought tolerant. If there is no watering for a long time during the breeding period, there is no rainfall, the soil is dry, and the climate is dry, which will easily cause the leaves of gardenia to turn yellow, which will seriously affect the growth of gardenias. If this is the case, it should be watered as soon as possible, preferably thoroughly, so that the root system at the bottom can also absorb the water.
In a dry climate, it is necessary to spray water frequently to ensure a certain humidity, so that gardenias can resume growth as soon as possible and grow more vigorously.
Fourth, the temperature is too low.
Gardenias like a warm environment, and can only germinate and grow in a warm environment, and their cold tolerance is very poor. If the temperature cannot be well controlled in winter, and the temperature is below 5 for a long time, gardenias in such an environment will be susceptible to freezing, will be frostbitten, and are prone to yellowing of leaves. If this situation is caused, it is necessary to take warm measures as soon as possible, the temperature should be stabilized at about 10, and the minimum should be kept warm at a late grip of more than 5, so that the gardenia can be restored as soon as possible and can also ensure safe wintering.
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The causes of gardenia yellow leaves are: excessive watering, uncomfortable flower soil, and application of thick fertilizer.
1. Overwatering
Excessive watering during cultivation can cause gardenias to appear yellow leaves. At this point, it needs to be depotted, cut off the yellow leaves and rotten roots, and replanted. Hunger mold.
2. The flower soil is uncomfortable
The soil that raises it is not breathable enough or is too alkaline will also cause it to have yellow leaves. At this time, it should be replaced with a breathable, weakly acidic flower soil.
3. Apply thick fertilizer
Applying a thick fertilizer will also cause it to appear yellow leaves. At this time, the flower soil should be watered, the fertilizer in it should be washed away, and then the fertilizer should be stopped for maintenance.
Gardenia rotten slow planting tips:
1. The potting soil is permeable
Gardenia potted culture, you can choose mountain soil, or with 4 parts of humus soil, 4 parts of vegetable garden soil, 2 parts of river sand mixed to make culture soil, it is best to keep part of the soil mass on the root system of the seedling when potting, in order to shorten the slow seedling time in the later stage of the plant, and change the pot once a year in April and May.
2. Temperature requirements
The growth temperature of gardenia is 20-28 degrees, late spring to early autumn, the weather is hot, pay attention to shade and cool down the work, you can move the plant to the shade or eaves, start indoor maintenance in mid-October, control the room temperature above 5 degrees, and move to the outside to receive light on sunny days.
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The reasons for the yellow leaves of gardenia are:
1. Overwatering: Gardenia flowers will turn yellow after being soaked in water and rotting roots, so you need to wait for the soil surface to dry before watering.
2. The temperature is too low: move the gardenia to a warm room in winter, and control the ambient temperature between 5-10.
3. Too little fertilization: apply ferrous sulfate or potassium dihydrogen phosphate to gardenia to make its yellow leaves green.
The sowing period of gardenia is divided into spring sowing and autumn sowing, and spring sowing is preferred. From early February to late February (beginning of spring to rain). Select plump, dark red fruits, dig out the seeds, rub them in water, remove the sinking seeds, and dry them to remove the water.
Then mix well with fine soil or plant ash, sow in the furrow, cover with fine soil, and then cover with straw; After germination, remove the straw, weeding frequently, if the seedlings are too dense, the seedlings should be evenly planted one after another, and the plant spacing should be kept at 10-13cm. Seedlings can be planted after 1-2 years of cultivation and a height of more than 30 cm.
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