Analysis on the causes of non-flowering of potted rose

Rose is a potted flower that many flower friends like very much, but some flower friends often encounter the situation that rose only grows branches but does not blossom. What is the reason for this? Let the editor analyze it for you.

Chinese rose

The main results are as follows: 1. The soil is barren or the potted plant has not been changed for a long time, the soil fertility is insufficient, the nutrition is deficient, especially the lack of phosphate fertilizer, which affects the flower bud differentiation, so it can not blossom normally.

2. The cultivation environment is too shady and poorly ventilated, and the light is insufficient, which affects the formation of flower buds.

3. Long-term pruning and excessive branching will disperse nutrients and easily affect the formation of flower buds.

4. With high temperature and lack of water, the soil temperature in midsummer is more than 30 degrees, and the high temperature inhibits the physiological function of the root system. if there is not enough water in the soil at this time, the root system is in the dry and hot soil layer, it is easy to cause branches and leaves wilting, leaf edge scorching, affecting autumn flowering. So watering in midsummer should be adequate, and add a layer of mulch on top of the basin soil, such as cut corncobs or chopped plant stalks, pull out the mulch a little when watering, pour water on the soil, not on the mulch, in order to lower the soil temperature and reduce water evaporation.

5. Early spring suffers frost injury, and the climate in northern early spring is changeable. At this time, rose enters the period of axillary bud germination, flower bud differentiation and new shoot growth. Once the flower bud growth is blocked by late frost or cold current, it can not blossom. The new shoots withered after freezing, affecting the flowering rate of the first batch of spring flowers. Therefore, we should pay attention to take protective measures to prevent frost damage.

6. The plant suffered from disease, but it could not be controlled in time, resulting in death.

It is not a dream to make potted plants blossom every month.

Chinese rose

Some people who have high requirements for the quality of life and have a lot of time will constantly try their best to enrich their spare time, so many people regard growing flowers as a hobby, take the common rose as an example. From the past, the cultivated rose has been optimized to potted plants and hydroponic culture in just a few years, which has greatly improved people's requirements for growing flowers. But for indoor potted rose people, if they want to blossom, they should also pay attention to the following key points.

Sunshine must be long

Where the rose is planted, it should be ventilated and get sunshine for more than half a day. This is the first condition that it can blossom like flowers. If it is placed in a half-cloudy and half-sunny place or in a shady place with insufficient light, it can only bloom in spring and autumn at most in a year. Therefore, for families whose living conditions can not meet the requirements of light, it is best not to plant Chinese rose but to plant more shady flowers.

Second, move the basin and change the soil to promote the growth of new roots

The soil can be changed once in April and September every year. The culture soil was mixed with yellow mud, chicken manure and rice bran at 3:1:6, and a small amount of bone powder was added. When changing the basin, the original old root, rotten root and diseased root should be cut off, and the mud around the root should be removed and the newly prepared culture soil should be added. Through the exchange of soil to enhance its vitality, according to the practice of changing soil, the number and length of flower branches are significantly higher than those without changing soil.

Third, cooling, leaf protection, promotion, to spend the summer safely

Production or maintenance of potted rose site, rose is best placed on the ridge, ditching and watering around, this environment can adjust temperature, humidity; if placed on a high slope, that is, high temperature and dry, not conducive to its growth. In high temperature in summer, more water should be sprayed to reduce temperature and increase humidity to promote new shoot growth. If possible, sunshade nets should be added to cool and prevent direct sunlight, so as to keep rose plants blooming with long leaves throughout summer. Such as platinum, nova and duet, the shocked orchid sprays water 2-4 times at noon on a sunny day in summer, which can reduce the temperature of the ground and flowerpot, and reduce the harm of red spiders.

Fourth, the times of fertilization should be more and timely.

General new species or transplant potted rose, with humus and loose loess can be cultivated, it is best mixed with a small amount of broad bean shell, bean cake or chicken pigeon dung, so that the rose can constantly absorb nitrogen, phosphorus, potassium and other nutrients from the soil. If the old potted rose needs to change pots, you can also apply base fertilizer according to the law; if you do not change pots, you can remove 2-3 cm of soil and fill in some fresh fish belly intestines or chicken pigeon dung and bean cake crumbs as base fertilizer. This is best done when the rose is dormant from January to February. In this way, the fertilizer will gradually ferment into liquid fertilizer, with Rain Water or irrigated water infiltrating into the root, achieving better results. It is the peak growing season of rose after May. Topdressing should be applied once every 10 days. The rotten fermented fish juice and vegetable leaf juice can be mixed with 3 parts of fertilizer and 7 parts of water, and the fertilization will be stopped in November. If you can do it in accordance with the above requirements, you can see the flowers of the rose every month. Rose has a natural aversion to heat, and it grows best when the temperature is 20-25 degrees; it is difficult to grow more than 30 degrees. If you have a good grasp of fertilization, you can overcome its weakness of being afraid of high temperatures in summer.

Chinese rose

V. timely prevention and control of diseases and insect pests

There are more than 20 kinds of diseases and pests that harm rose flowers, including black spot, powdery mildew, beetles, armyworm, red spiders, aphids and so on. These diseases and pests occur regularly, such as powdery mildew occurs in spring and winter, especially in the case of large temperature difference between day and night and large dew at night. It gradually decreases after entering the high temperature season in June, no longer harm, no need for prevention and control.

If there is a small amount of occurrence, the leaves can be cut off, and carbendazim or carbendazim can also be used to control the disease. Black spot usually occurs every year, especially when Rain Water occurs heavily in summer. The countryside should be cleaned well, the pruned branches should be cleaned and burned centrally, and pesticides such as chlorothalonil and thiophanate should be sprayed before and after rain.

Remove some buds to prevent excessive consumption of nutrients

Sometimes the high temperature lasts for a long time in summer, even if heat-tolerant varieties, such as African girls, Golden Crown and Golden Gate, grow well in summer, they will blossom without full development of buds, causing short pedicels, small buds, no luster and other phenomena; therefore, when the plant grows buds, most buds should be picked to cultivate tree strength and keep the plant strong.

7. Pruning and flower control

Flower control is closely related to temperature, high temperature, higher flowering, generally pruning twice, starting pruning at the end of May and the end of October respectively. Liquid fertilizer based on nitrogen fertilizer should be applied once before pruning, all buds should be picked and pruned 7 to 10 days later, pruning should be carried out on a sunny day, the knife should be sharp, the tree will be strong after pruning, and new buds will grow quickly, leaving two buds for each branch. Pick the weak and fast-growing buds. When the buds grow to have a finger long, buds of the same length can be left according to the needs of appreciation. Buds of different lengths can also be left, and the former will concentrate on blooming at the same time and enjoy it for a short time. The latter has a scattered flowering time and a long appreciation time.

If you live in an area with a large temperature difference, you can choose the sun-dried water so as not to cool the water and affect the normal opening of the flowers. Another point is that if excessive fertilization should be timely watering to alleviate the concentration of water and fertilizer, be sure to fertilize in the full bloom of the rose.

Techniques of continuous flowering of potted rose

Rose, known as the queen of flowers, also known as "moon red", is an evergreen, semi-evergreen low shrub. Rose is a kind of flowers that bloom in four seasons, usually red, or pink, occasionally white and yellow, can be used as an ornamental plant, can also be used as a medicinal plant, if the potted rose blossoms continuously, it will be more popular. To achieve this goal, we need to pay attention to the following points in management.

Change the basin rose every year to less than early spring to change the basin or pour the basin once, in addition to part of the fertile basin soil, but also should apply base fertilizer. Flowerpots are easy to use pottery flowerpots. If you use mud pots, you can cover them with a thick plastic bag to reduce evaporation.

Generally, liquid fertilizer is applied every 10 days after sprouting in spring. At the beginning, thin fertilizer is applied frequently, and then the concentration is gradually increased. The emphasis is on topdressing before flowering in May and after flowering at the end of June and before flowering again in October.

Watering pot rose daily watering should be "dry and wet", early spring and late autumn watering should be carried out around noon, the water temperature is higher than the soil temperature; summer should be in the early morning or evening, in order to avoid physiological drought. Proper sun shading and multiple water sprays should be carried out in summer to cool and moisturize. Pay attention to drainage and moistureproof in the rainy season to avoid rotting roots.

Shading and ventilation when the temperature exceeds 30 ℃, it must be shaded and cooled around noon. Potted flowers can only receive 50% scattered light in summer. Pruning for grafted seedlings, the first step is to erase the sprouts on the rootstock, and the remaining branches must be strong branches on the scion. If you lag behind from spring flowers to summer flowers, you should cut off the residual flowers and upper branches in time, so as not to consume too much nutrients and affect growth. When pruning, leave the bud mouth on the outside and cut off the useless long branches to leave a place for the next branch to elongate and blossom. Autumn flowers should be moderately pruned to promote the growth of new shoots. In winter, heavy pruning is carried out to remove all useless branches, diseased branches, dead branches, injured branches, overlapping branches and cross branches from the base, so that the whole rose retains 3 to 5 strong buds.

The prevention and control of diseases and insect pests can be combined with changing pots and pruning, generally spraying 0.5 Baomedu stone sulfur mixture, and spraying fungicides frequently. The main pests of rose are aphids, red spiders and so on. Aphids can be removed with a brush dipped in water or sprayed with 1500 dimethoate or dichlorvos emulsion. To control red spiders, 20% synergistic fenvalerate can be sprayed 5000 to 8000 times.

Through the detailed introduction of this article, I hope you can gain something! Thank you for your support and attention to the succulent flower bed!