How long do sunflowers live and how long do sunflowers last?

Sunflower is a 1-year-old herbaceous plant.

The growth period of sunflower refers to the number of days from seedling emergence to seed maturity, which is generally more than 85-120 days. The length of the growth period varies depending on the variety, sowing date and cultivation conditions. The whole growth period of sunflower is divided into four growth periods: seedling stage, budding stage, flowering stage and maturity stage.

1 Seedling stage From the emergence of seedlings to the emergence of buds, it is called the seedling stage. Generally, it takes 35-50 days, and 28-35 days for summer sowing. This period is the stage of leaf and flower primordium formation and floret differentiation.

At this stage, the growth of the aboveground part is stunted, and the root system of the underground part grows rapidly, and a strong root system is formed soon, which is the stage with the strongest drought resistance of sunflower. 2 Budding stage A stellate body with a diameter of 1 cm appears on the top of the sunflower, commonly known as the bud. It generally takes about 20 days from budding to flowering, which is the period of vegetative growth and reproductive growth, and it is also the most vigorous stage in life.

During this period, sunflowers need the most fertilizer and water, accounting for about 40 to 50 of the total fertilizer demand. If the demand for water and fertilizer cannot be met in time during this period, the yield will be seriously affected. 3 Flowering period There are 75 plants in the field with tongue-shaped flowers open, that is, the flowering period is entered.

It usually takes 6-9 days for a flower disc to complete the opening of the tubular flower from the tongue flower to the tubular flower. From the second day to the fifth day is the peak flowering period of this inflorescence. The number of flowers blooming in these 4 days accounts for about 75 of the number of flowers.

The flowers mostly bloom at 4-6 o'clock in the morning, and are pollinated and fertilized the next morning. Unfertilized branches can remain for 7-10 days without withering. The self-pollination and seed setting rate of sunflower was very low, only about 3. Cross-pollination has a high seed setting rate.

However, if the temperature is high, the rain is abundant, the humidity is high, the light is insufficient, the soil is dry, etc., the seed setting rate will be greatly reduced; Therefore, adjusting the sowing date, timely fertilization, watering, pest and disease control, and taking measures such as bee release or artificial assisted pollination can improve the seed setting rate. 4 Maturity period From flowering to maturity, it is 25-55 days for spring sowing and 25-40 days for summer sowing. There are differences between different breeds.

About 15 days after flowering and pollinating shield is the stage of seed formation. The weather should be clear, the temperature difference between the day and liquid should be large, and the soil moisture should be suitable.

Normal soil-grown sunflowers can be raised for a year. Because sunflower is an annual herbaceous plant, the maintenance time of sunflower fresh cut flowers is short, only 7-10 days, the growth environment is suitable, and the maintenance method is appropriate, which will prolong the maintenance time of sunflowers. In the maintenance of potted sunflowers, it can provide fertile, loose and breathable moist soil, do a good job in water and fertilizer management, and when water is raised, the water can be changed regularly to keep the water clean and a small amount of nutrient solution can be dropped.

Sunflower precautions.

Breeding potted sunflowers should pay attention to the appropriate fertilizer water, watering to follow the principle of "dry and wet", sowing to budding can maintain slightly dry soil, which is more conducive to the growth and development of sunflower roots, but in the flowering period of the plant to add enough water. During the growth period, nitrogen fertilizer needs to be applied once every 7 to 10 days, and phosphorus and potassium fertilizer should be applied after budding.

Sunflowers are very sensitive to sunlight and need plenty of light for their plants to grow healthier. If it is exposed to rainy days or a shady environment for a long time, sunflowers will have drooping leaves and yellow-green color. And the most suitable temperature for sunflower growth is 18 30, the minimum temperature shall not exceed 10, and when the temperature is higher than 25, pay attention to ventilation.

<> sunflower can live for a year, its seeds will gradually wither after the stem and leaves mature, we can collect seeds for the next year and then plant, when maintaining sunflowers, we need to let it have enough light, daily need to keep the soil slightly moist, in its growth period also need to apply a thin fertilizer regularly, so that sunflowers can grow robustly.

1. One year.

Sunflower is an annual herbaceous plant of the genus Sunflower in the Asteraceae family, it can live for a year, from its germination, growth, flowering to fruiting generally takes more than 80-120 days, after its seeds mature, its stems and leaves will gradually wither away, we can collect the seeds, and then sow and plant in the next year.

2. Sufficient light.

Sunflower is a sun-loving plant, its growth needs sufficient light orange irradiation, so when we maintain it, it needs to be placed in a good lighting place, so that the plant can grow robustly, otherwise long-term maintenance in a shady place, resulting in it light and lack of light, then the plant is easy to grow poorly.

3. Reasonable watering.

Sunflowers like to grow in a humid environment, but if you water too much, it is easy to cause the root system of the plant to rot, so watering should be carried out according to the dryness and humidity of the soil, and it is best to keep the soil slightly moist every day.

4. Sufficient nutrients.

The growth of sunflowers needs sufficient nutrients, so in the plant growth period, it is also necessary to apply thin fertilizer frequently to meet the nutrients required for the growth of sunflowers.

How long can sunflowers be raised.

Hydroponic sunflowers: Sunflowers grown in water can last for about 8-12 weeks. During this time, the water should be kept clean.

The roots of sunflowers should be pruned diagonally to increase the water-absorbing area of the roots. The right amount of sunlight is enough. Long-term sun exposure can lead to dehydration and death.

If fresh sunflowers can be stored in water for 7-10 days, soil-grown sunflowers: soil-grown sunflowers generally live for about a year, which belongs to the spring and autumn harvests.

How to raise sunflowers.

1.Sunflowers have a strong ability to grow. When planting, it is best to choose fertile and loose soil with good drainage.

Sunflowers are very resistant to severe cold, so the temperature should be adjusted to between 21-27 degrees during the day and 10-16 degrees at night. 3.Sunflowers should be watered regularly and appropriately.

Sunflowers can not live in the second year, sunflowers are annual herbaceous plants, flowering and fruiting will gradually die, to the spring of the next year can be re-harvested and sown, before sowing the seeds need to be put into the agent to sterilize, and put into the sand soil to promote germination. After that, the germinated seeds can be evenly sown into the loose and breathable humus soil, and properly watered and moisturized.

Sunflowers do not live in the second year, sunflowers are annual herbaceous plants, and when they bloom and bear fruit, they will gradually die. Sunflower seeds can be sown and propagated in the spring of the following year, and they can be reproduced the following year.

Sunflowers can be sown in March and April each spring, during which the temperature is relatively stable and can improve the germination rate after sowing. When planting sunflowers, it is necessary to choose seeds with full particles and no pests and diseases, and then put the seeds into the prepared pesticides for seed dressing, sterilization and disinfection treatment, and then put the seeds into the sandy soil so that the seeds can germinate as soon as possible.

When planting sunflowers, it is recommended to use loose and fertile humus soil as the substrate for cultivation, and before sowing, it is necessary to plough 30 40 cm of land, clean up the grass roots and soil clods in the soil, and then evenly spread the sunflower seeds to the soil surface, and cover with a layer of plastic film, so that the sunflower can grow vigorously.

After the completion of sunflower sowing, it is necessary to properly water and moisturize, and when cultivating sunflowers in the later stage, it is necessary to water and moisturize in time after the soil is dry. During the growth period of sunflower, it is necessary to apply 1 or 2 times of mixed fertilizer of ammonium dihydrogen phosphate and urea to speed up the growth rate of sunflower, and it is also necessary to spray potassium dihydrogen phosphate solution on the leaves of sunflower to improve the yield of sunflower.

Sunflower is an annual herbaceous plant that can be raised for more than a year and grows at a temperature of 15-30. To maintain sunflowers, we must first ensure sufficient light, and the seedlings, leaves and flower discs have strong phototaxis. The second is proper watering, less watering in the early stage, more watering in the bud stage and flowering period, and then active prevention and control of pests and diseases, and the need to spray sunflowers in time.

Sunflower is an annual herbaceous plant that can be raised for more than a year, and the most suitable growth temperature is 15-30. The temperature environment is suitable, the sunflower grows faster, and the sunflower can bloom in all seasons when the temperature conditions are available. The temperature of sunflowers should not be lower than 10 during the growth process, otherwise it will lead to poor growth.

First of all, it is necessary to ensure light, sunflowers are light-loving plants, and seedlings, leaves and flower disks have strong phototaxis. Sunflowers can grow healthily under sufficient light conditions, while lack of light will cause seedlings to grow. After the sunflower blooms, it needs to receive enough light so that the seeds will be fuller.

The second is proper watering, sunflowers have a relatively large need for water, but their water requirements are different in different periods. The water requirement of sunflower in the early stage of growth is relatively small, and the watering key water at this time follows the principle of seeing dry and wet, which is conducive to root development. The period from the bud stage to flowering requires a large amount of water, so it is necessary to keep the potting soil moist frequently, so as not to affect the flowering.

Then there is active control of pests and diseases, the more common ones are powdery mildew and black spot, which can threaten sunflower leaves. At the beginning of the disease, 500 times of 50% Tobuzin wettable powder can be sprayed. Red spiders and blind bugs are also insect pests that sunflowers are prone to, and can be sprayed with 1000 times of 40% dimethoate EC to control them.

<> sunflower can only be cultivated for a year, because sunflower is an annual herbaceous plant, sowing and growing in spring, and the plant will wither and die in winter, so it can only be cultivated for one year, in the process of maintaining sunflowers, it can be watered with pollution-free water, keep the soil moist, and can also provide inorganic fertilizer for sunflowers, prolong the flowering period of plants.

1. About a year.

Sunflowers can be cultivated for about a year, because sunflowers are annual herbaceous plants, and their lifespan is only one year, and when they wait for winter to come, sunflowers will wither and die, so sunflowers can only be cultivated for one year. In the process of planting sunflowers, loose, breathable, nutrient-rich sandy soil can be used.

2. Provide moisture.

In the process of maintenance, it can be watered with natural water and pure water that has not been polluted, and can also provide nutritious river water and lake water for sunflowers, so as to keep the soil moist, and when watering sunflowers, water can not be watered on the buds, so as not to rot the buds.

3. Scientific fertilization.

Sunflower is suitable for growing in a more fertile environment, in the process of daily maintenance, can provide rotten farmhouse fertilizer for sunflowers, avoid soil compaction, resulting in sunflower lodging, in the sunflower flowering period, you can provide phosphorus and potassium fertilizer for it, promote the plant as soon as possible to complete the flower bud differentiation, in the sunflower growth period, you can use nitrogen fertilizer, improve the growth rate of the plant.

4. Disease prevention and control.

In the process of caring for sunflowers, they can be used to prevent diseases. First of all, it is necessary to regularly observe the growth status of the sunflower, after finding the blackened and rotten branches and leaves on the plant, it is necessary to cut it off in time, if the sunflower has the symptoms of rotten and blackened rhizomes, it is necessary to eradicate the diseased plant, and spray the sterilization agent to the area where the diseased plant is planted.

1. Can you survive the winter?

Sunflowers are poorly resistant to cold and have low winter temperatures. If the temperature is not controlled, it will freeze to death if it is left outside, and it will not be able to survive the winter. But if you move it indoors in time, provide it with a warm environment, and pay attention to maintenance methods, you can spend it safely and will not freeze to death.

Second, the method of wintering.

Once cooled, move indoors. The indoor temperature is kept between 15-20 degrees, and the minimum temperature is above 10 degrees Celsius to ensure that there is no frostbite. At this time, the growth is slow, the water requirement is low, and the water evaporation is slow.

So reduce the amount of watering and don't just water until the soil is dry. If the soil is in a dry environment, it is more conducive to winter. Also, pay attention to the sun.

It is light-loving in itself, and the light in winter is mild. It can be left in direct light for the whole day. Only with sufficient light can it accumulate nutrients and thus bloom as expected in the following spring.

There are many kinds of the sun in the current position. Common varieties are generally annual plants that can live for one year. After the flowers wilt in winter, the plant will stop growing and slowly die.

But some varieties are perennial state ridges that live for three or four years. In addition, whether you can live in colonization depends on the environment you usually provide, especially the low temperature in winter. It is necessary to control the temperature and ensure a safe winter, so that you will live longer.

Sunflower flowers can generally live for one to three years, its life span is relatively short, and it can be maintained without spring, and it can only live for three years at most. Sunflower flowers can also be hydroponics, generally by cutting its roots obliquely, so that it is more convenient for it to survive, and it can live for three to four days in general hydroponics.

How long can sunflower flowers be raised.

Sunflower flowers can generally live for one to three years, its life span is relatively short, and it generally cannot be maintained forever, and can only live for three years at most.

How long do hydroponic sunflower flowers live.

Sunflower flowers can be hydroponics, generally its roots are cut obliquely, so that it is more convenient for it to survive, generally hydroponics it can live for three to four days when the closed room.

How long do potted sunflower flowers last.

Sunflower flowers can be raised in soil, it is relatively suitable for soil cultivation, but you need to choose the right soil to maintain, in addition, generally potted sunflower flowers can be raised for about two or three years.

Sunflower flowers are raised for a few days.

Sunflower flowers can only be raised for about a month, such as the fruit is hydroponic, fresh sunflower flowers can be raised for five days, generally it is not very suitable for maintenance in water.

How to raise sunflower flowers.

Sunflower flowers generally need to be given more light if they want to be maintained for a long time, because it likes light, and generally needs to receive more than 8 hours of light every day to ensure that it grows longer.