When to pluck the topping of potted cosmos, the method of topping the topping of cosmos

Topping: Regarding the topping of cosmos, the general information says that it is necessary to topple. In my planting process, I found that cosmos should not be topped too early, if the first few pairs of true leaves are topped, leaving a pair of true leaves and a pair of cotyledons, it will grow side buds in the leaf axils of both true leaves and cotyledons, but the buds are very weak, it will take a while to grow, and even the whole plant is difficult to regain strength.

It is recommended to wait until it grows to more than 20 cm, or even when the first bud begins to emerge in the middle, do not pluck the top if the branches are vigorous, and if there are no branches, remove the clump of leaves with the flower bud in the middle. The best and most dense trees I had last year were none topped, so it depends on the actual situation. --Excerpt from the Hidden Flower Pavilion.

1. After the seedlings grow 4 true leaves, they need to be topped, and two buds will grow in the place where they have been picked, which is the effect of topping.

2. Cosmos is strong, likes sunlight, drought resistant, and has no strict requirements for soil, but can not accumulate water. If it is planted in fertile soil, it is easy to cause branches and leaves to grow and affect the quality of flowering.

3. If the planting ground is applied with basal fertilizer, there is no need to fertilize again during the growth period, if the soil is over-fertilized, the branches and leaves are easy to grow, and the flowering is reduced. Or apply rotten urine with 5 times as much water every 10 days during the growth period. When the weather is dry, water it 2 or 3 times, that is, it can grow and bloom well.

7 During the high temperature in August, flowerers are not easy to bear fruit. Seeds tend to fall off when they are ripe, so they should be harvested early in the morning. Cosmos is a short-lived plant, and the spring-sown seedlings tend to have few leaves and flowers, while the summer-sown seedlings are short, neat and flowering.

It grows rapidly and can be topped several times to increase branching.

Topping is done when it has just sprouted and grown to four or five true leaves. Not anymore. (It is said that the real leaf is the kind that resembles a bean sprout petal).

Bask in the sun, water more and loosen the soil.

I didn't pluck my tops last summer, and I was too tall and too big to fall over, and because I was in the way, I pulled it all out.

Cosmos topping topping is actually very simple, some flower friends are not sure, is a little distressed, can't get down, the reason why you want to give cosmos topping topping, is because cosmos grows too fast, easy to grow tall and not branched and flowering less, so you have to be ruthless, although the plant type is not particularly good-looking after topping, but it can promote flowering.

Cosmos topping topping precautions:

1. Topping of the chrysanthemum, the flower seedlings must have at least 4 pairs of complete true leaves, that is, when the total number of leaves is more than 10. Laughing.

2. The length of cosmos branches should be more than 10 cm (related to the variety, some varieties, the branches will produce flower buds if they do not grow; It is also related to the sowing season, cosmos sowing in autumn is shorter than spring sowing, and it will grow shorter and stronger. )

If you top too early, it is easy to weaken the seedlings and affect the future growth, so the topping of plant seedlings should pay attention to the conditions and be cautious.

Cosmos is also known as Qiuying, Gesang flower, Zhang Daren flower. It is an annual herbaceous plant. It is mainly found in Mexico and the rest of South America.

It is also widely cultivated in various parts of the country. The capitate flowers are single-whorled, apex truncated or with small notches. Flower colours range from white, pink to purplish.

For flower friends who breed cosmos, it is the most headache to top and pluck it, many people will not, and the following will tell you about the method of topping and topping of cosmos. I hope it can help everyone.

Cosmos topping topping is actually very simple, some flower friends are not sure, is a little distressed, can't get down, the reason why you want to give cosmos topping topping, is because cosmos grows too fast, easy to grow tall and not branched and flowering less, so you have to be ruthless, although the plant type is not particularly good-looking after topping, but it can promote flowering.

Cosmos topping topping precautions:

1. Cosmos topping, flower seedlings must have at least 4 pairs of completely lead-based true leaves, that is, when the total number of leaves is more than 10.

2. The length of cosmos branches should be more than 10 cm (related to the variety, some varieties, the branches will not grow and the flower slide core buds; It is also related to the sowing season, cosmos sowing in autumn is shorter than spring sowing, and it will grow shorter and stronger. ）

If you top too early, it is easy to weaken the seedlings and affect the future growth of the acacia to let He, therefore, to top the plant seedlings, we must pay attention to the conditions, and we must be cautious.

When cultivating cosmos, topping is actually very simple.

The reason why cosmos needs to be topped and topped is because when breeding cosmos, because the growth rate of cosmos is very fast, if you do not topping and topping, cosmos is easy to grow very tall, and there are no branches, and there will be few flowers.

Cosmos must be able to get started when topping and topping, and some people are worried that it will affect the growth of cosmos and it is difficult to start, which is not good. Although topping and topping will affect the plant shape of cosmos, the flowering is much better.

When topping the cosmos, it is necessary to grow the seedlings to a certain extent, at least 4 pairs of leaves. Generally, it is best to wait until the cosmos has grown more than 10 leaves before topping.

When cultivating cosmos, it is necessary to keep the branches of cosmos at least 10cm, because some varieties of cosmos have too short branches, and it is difficult to flower. In addition, the growth of the branches and leaves of the autumn-sown cosmos is relatively short and strong compared to the spring-sown cosmos.

When topping and topping cosmos, be careful not to do it too early, if you top and topping too early, it will weaken the seedlings of cosmos, which is very bad for growth. Therefore, it must be done when the cosmos is suitable for topping.

Cosmos sowing should be determined according to the region. If it is in the northern region, it should be sown in spring or autumn, and the high and low temperatures in summer and winter are not suitable. If you are in the warm region of the south, the four seasons are like spring, so sowing can be carried out in all seasons.

1 Soil: First put the prepared seeds in a small plastic bag, then place them in a dry and cool place to keep the seeds fresh. Then prepare the pot, prepare a large pot with a diameter of 15 cm, and then fill it with garden soil, and the sowing season is best in spring or autumn.

The seeds are then sprinkled in pots and covered with a thin layer of soil to prevent brewing while watering. Then pour a sufficient amount of water on the roots, and then place the pot in the shade. If the temperature is higher than 15, the chance of germination will be very fast, generally starting to sprout after a week, at this time, you can place the pot in a sunny place, avoid strong light.

2 Watering and fertilizing: When cosmos is growing, fertilizer should not be applied too much, and it is not easy to water too much, which will cause cosmos to grow. If the cosmos plant is too tall, it will cause no flowers or very few flowers, which will affect the ornamental value.

It prefers to grow in sunny places, avoid standing water, and if the potting soil is relatively poor, the flowers will bloom more beautifully and naturally.

3. Topping: When cosmos grows, pinch off the middle top branch to promote the development of branches, which is conducive to more lush flowers.

4. Pest control: Cosmos is prone to aphids and red spiders. Be sure to keep it light and breathable, you can use a small brush to brush off these insect infestations, or you can use laundry detergent and dish soap mixed together to spray it, the ratio is 1:

100 is enough, the concentration is not too large, spray twice a day, so the effect will be better.

Summary: The above is just one of the methods, I hope this introduction can help you plant more and better colorful and beautiful cosmos.

Mode of reproduction. Sow.

Cosmos is propagated from seeds. In northern China, the seeds are generally sown from April to June, and the flowers bloom from June to August, and the climate is hot, rainy and less flowering from August to September. After the autumn cools, it continues to bloom until the frost falls.

If the seeds are sown in July-August, they will bloom in October, and the plants will be short and neat.

The seeds of cosmos have the ability to be self-sown, and once planted, they will produce a large number of self-sown seedlings in the future; With a little protection, it can bloom as usual. It can be sown in the open bed in mid-April, and if the temperature is suitable for about 6-7 days, the seedlings can be unearthed.

In late March and early April, the seeds were sown in the open seedbed. Germination occurs at a low ground temperature of 15, but if you sow seeds early, they will grow into giant plants with a height of 2 meters, and they will easily lodge due to typhoons or the weight of the plants. There are also early-blooming varieties that bloom 50-70 days after sowing, so it is necessary to divide the seeds into early bloom and autumn bloom.

Cuttage. Cuttings propagation, carried out in May, can select a thick top branch, cut a section of 8 cm to 10 cm long as cuttings, with 3 to 5 plants as a cluster of inserts in the pot, the pot should be buried in the soil, exposed 4 cm to 5 cm on the ground, watering and shading, half a month later that will take root. After rooting, apply a thin fertilizer solution every 15 days, and then remove the terminal bud when it grows to 15 cm to promote more branches.

If the fertilizer and water are properly controlled, the flowers can be seen in about 45 days.

During the growth period, it can also be propagated by cuttings, cut about 15 cm of strong branches under the node, insert them in sandy loam soil, properly shade and maintain humidity, and can take root in 6-7 days. In the central and southern regions, spring sowing in April, germination is rapid, and germination occurs 7-10 days after sowing. It can also be propagated by cuttings of young shoots, and it can take root 15-18 days after cutting.