Causes and treatment methods of Camellia Leaf loss

Friends who like flowers and plants must know camellia, but it is not so easy to raise camellia, some flower friends camellia leaves easily, camellia leaves first to find out the reason, and then decide what to do next. Xiaobian summarizes the common reasons for three kinds of camellia leaves for you. Friends who like camellia can find out together.

Camellia

1. The rotten roots of accumulated water lead to the leaves of camellia

Some flower friends buy camellia time is not long, watering is also very diligent, because the pot is big, the root soil is too wet for a long time, will make the root suffocation, lead to camellia root rot, so deciduous.

II. Anthrax

The disease occurs in camellia leaves, mainly in mature leaves or old leaves. The lesion is nearly round or irregular, dark green in water stain shape, and finally turns yellow brown or reddish brown. There are small black spots on the lesion. The size of the lesion varies, some can be expanded to more than 1/2 of the leaves, the edge has a yellow-brown ridge line, and the boundaries of the healthy part are obvious.

1. Remove litter and eliminate infection sources.

2. Strengthen cultivation management and apply organic fertilizer. Weeds are removed frequently and irrigation is rational to enhance the disease resistance of plants.

3. In the early stage of disease, spray 150 times Bordeaux mixture, 65% dezeb 600-800 times solution or 70% thiophanate-methyl 1000 times solution once every half month, and spray 2-3 times continuously.

III. Poor ventilation

Some camellia leaves are caused by poor ventilation, especially in winter, long-term indoor, poor ventilation, dirty air or room temperature more than 20℃, will also cause bud falling leaves.

The reason why camellia does not bloom and its solution

Because camellia flowers are big and colorful, and there are many varieties, it can be said that camellia flowers can be said to be the heart of many flower friends. However, some flower friends often encounter the situation that camellia does not bloom in the process of cultivating camellia. Xiaobian will analyze the common reasons and solutions for you.

Camellias (Details)

I. Long time without turning over the basin. Camellia has not grown for several years, and the smaller it grows, this is a common problem encountered by many flower growers, one of the most important reasons is that it does not turn over the pot for a long time. Camellia root good ventilation, like new soil fertilizer mud, so to timely turn pot for soil, cut off aging roots, so as to promote the growth of new roots, so that Camellia growth exuberant. After flowering in spring, family cultivation should at least turn over the pot and change the soil once every other year, of course, it is best to change it once every six months, after the new shoots are fully mature. The specific method is: take out the camellia together with the pot soil, cut off 1/3 of the pot soil with a sharp knife, cut off the aged root strips, put them back into the pot, fill the gaps with pond mud or other new soil fertilizer mud, sprinkle water to make the soil wet, and fully contact with the root system.

2) Lack of humidity. Camellia likes moist, cool environment, dry air, high temperature and high heat will lead to its moisture imbalance and die. Therefore, in the balcony cultivation often because of poor air mobility, dry environment, direct sunlight when the temperature is high and difficult to maintain. In order to solve this problem, winter should be placed in the sun, and often spray water to the leaves, so that the leaves breathable. In summer, the pot planted with camellia is placed in a water layer 3 cm to 5 cm thick, and it is possible to open beautiful flowers.

3. Long-term indoor placement. Camellia in full bloom, moved into the indoor display appreciation is OK, but put it indoors for a long time, it will cause thin branches and leaves, leaves thin, after leaving the room can not withstand strong light exposure, and prone to sunburn. Therefore, camellia is best placed on the balcony cultivation, but in summer to do shade treatment. When the temperature drops below 0℃ in winter, you can move indoors, but keep away from heat sources. When the weather is fine, you should open windows for ventilation during the day.

4. Too much fertilizer and water. Camellia is not tolerant of fertilizer, fertilization too often, there will be prosperous, but not buds. Therefore, in summer, fertilization should be controlled as much as possible to prevent root burn. If fertilization is really needed, master the principle of "rather light not thick, rather less not more, less watering many times". It is better to fertilize in cloudy days or after 5 p.m. Some raise good love to use urea for topdressing, which is very unfavorable to the growth of camellia, especially young camellia seedlings, topdressing urea will cause leaf loss, especially if the concentration is too large, it will cause reverse osmosis, resulting in plant death. Late July to August is the high temperature dormancy period of Camellia, at this time can not be applied any fertilizer. Camellia in the whole process of growth and development, the demand for water more, but watering to see the pot soil dry see wet for the principle. If 0.1% ferrous sulfate is added to the water, it can promote the vigorous growth of plants and the color of leaves.

How to deal with the falling of Camellia buds and the reasons for the falling of Camellia buds and solutions

Camellia is a traditional ornamental flower in China, which is beautiful in shape, evergreen in all seasons and has a long flowering period. Therefore, many people will put a pot in their homes. But in the breeding process often appear camellia bud drop phenomenon, what should we do? Today, I will explain to you the reasons for the fall of Camellia buds and solutions.

1. Sparse buds

If there is no improper maintenance of camellia, the reason for camellia bud falling is thinning bud. Some people think that it is good to have more buds. In fact, too many buds are bound to disperse nutrients, causing buds to fall off due to insufficient nutrition.

Solution: About August, camellia buds have soybean size should be timely thinning buds, a branch only retain a well-developed bud, especially in the weaker plants, must be timely thinning buds.

2. Soil discomfort

Soil discomfort is also one of the reasons for camellia bud drop, camellia growth soil pH value of 5~6.5 sandy soil is more suitable, soil acid or alkali, clay heavy soil, saline-alkali soil, calcareous soil will make camellia growth bad, some trace elements can not be absorbed. The lack of phosphorus, iron, sulfur and other nutrients in the soil will also form a lack of green, bud drop phenomenon.

Solution: camellia buds brought by soil discomfort should be sprayed with 0.2% ferrous sulfate solution every week.

3. Improper watering

Camellia wet, bogey ponding, root soil long-term too wet, will make the root suffocation, light buds do fall, heavy death. To protect buds, it is necessary to keep the basin soil moist and slightly dry. If it is too dry, it will cause the fleshy fibrous root to dehydrate and die; if it is too wet, the fibrous root will die due to suffocation and decay of accumulated water. When the plant is deprived of water supply, it will bud first and then defoliate.

Solution: If the pot soil is too dry, it should be watered a little first, so that the pot soil is gradually moist, and then irrigated with water, otherwise the root tip loses water, and the water suddenly cannot adapt, and the bud cannot be dropped. In winter, it should be dried to about 70%, and warm water should be poured at noon on a sunny day.

4. Poor temperature

Poor temperature is another reason for bud drop of camellia. It is advisable to keep 3℃~5℃ during overwintering of camellia. If the temperature exceeds 16℃, it will germinate ahead of time and cause bud drop. Below 0 ° C, the buds will freeze. The temperature of early flowering stage should not be lower than 5℃~7℃, the temperature of flowering stage should be 10℃~15℃, the highest temperature is 20℃, and the flower bud can be kept above 2℃ in winter. Camellia most avoid temperature difference is too large, sometimes high temperature, sometimes low temperature, buds will all fall off.

Solution: When the temperature drops to nearly 0℃, move the camellia to the indoor light, cover the curtain at night to keep warm, pay attention to regulating the temperature of the flower room to give the most suitable growth temperature for camellia.

5. Poor ventilation

Camellia buds are sometimes caused by poor ventilation, especially in winter, long-term indoor, poor ventilation, dirty air or room temperature more than 20℃, will also cause buds to fall leaves.

Solution: When maintaining the most suitable growth temperature of camellia, we should also pay attention to ventilation, which can be placed by the window and blown properly.

6, winter fertilization

Camellia in winter will enter the dormancy period, in the dormancy period is not suitable for fertilization, even if the thin fertilizer is also very easy to drop buds.

Solution: camellia in early spring from before flowering, nitrogen, phosphorus mixed liquid fertilizer can be applied 1 to 2 times to prevent bud drop, but nitrogen should not be too much. To autumn should store enough nutrients needed for flowering, flowering can be colorful. From September to October, thin fertilizer with high phosphorus content, such as decomposed chicken manure, is applied every month to achieve the purpose of strong buds. Stop fertilization in November and avoid fertilizing during winter dormancy.

7. Pest infestation

Camellia diseases include anthracnose, coal pollution, gray spot disease, etc., of which anthracnose is the most serious. The pests are mainly scale insects. Discovered pests and diseases should be timely spraying control, otherwise there will be serious bud drop phenomenon.

Solution: anthracnose harm, available equivalent Bordeaux mixture or 25% carbendazim WP 1000 times spray control, shell insect harm available 40% omethoate EC 1000 times spray control or wash clean.

The above is for everyone to introduce the camellia bud drop reasons and solutions, I hope to help you, more home knowledge please pay attention.