Can sunflowers be raised in March, can sunflowers survive the winter, and how long can sunflowers li

It depends.

The temperature is higher than 15 degrees can be raised, and the weather in many southern areas is very warm, the temperature is more than 15 degrees, and the sunflower likes to bask in the sun, so it is very suitable for open cultivation. However, the temperature is still not very suitable for open cultivation in places where the temperature is lower than 15 degrees for a long time, because the national climate is uncertain, like many northern regions are still in winter in March, and the temperature cannot reach 15 degrees at all, so it is not recommended to raise open.

If your sunflower does not grow so well, the first thing is to ensure the temperature of the environment in which it grows, and then you can also apply some fertilizer.

Sunflowers are poorly hardy and have low temperatures in winter. If the temperature is not controlled, it will freeze to death if it is placed outdoors and cannot survive the winter. However, if you move it indoors in time, provide it with a warm environment, and pay attention to the maintenance method, it can be safely passed without freezing to death.

After cooling down, move indoors, and the indoor temperature is best maintained between 15 and 20 degrees, and the minimum should be above 10 degrees, so as to ensure that there will be no frostbite. At this time, the growth is slow, the water demand is low, and the water evaporates slowly, so it is necessary to reduce the amount of watering, and do not water casually if the soil is not dry. Soils can be in a dry environment and are more conducive to winter.

Also, pay attention to getting more sunlight. It is light-loving in itself, and the light in winter is very mild, so it can be placed in direct light to bask in the sun all day, and the light is enough to accumulate nutrients, so that it will bloom as scheduled in the spring of the next year.

There are many varieties of the sun, and the common varieties are usually annual plants, that is, they can live for one year. In winter, when the flowers wither, the plant stops growing and slowly dies. However, some varieties are perennial and can live for three or four years.

In addition, how long you can live depends on the environment you usually provide, especially the low temperature in winter, and you should control the temperature to ensure a safe winter, so that you will live longer.

1. How to raise the sunflower that I just bought.

1. Branches: Many of the sunflowers sold online are cuttings without roots, and you need to prepare loose and breathable soil after buying it home, and water the soil in advance. Insert the shoots of the sunflower vertically into the soil and gently compact the soil around the shoots to pot the plant.

Move to a cool and ventilated place and wait for the seedlings to slow down. Usually after observing that the leaves of the sunflower branches have returned to erect and have a clear growth trend, the potted plant can be moved to a sunny place, and how much sun is conducive to the flowering of the plant. If you want the sunflower to grow and burst quickly, you can also cut the sunflower you bought home into several small sections, keep the length of each branch at 3-5cm, remove the bottom leaf of the branch, and insert the pruned branch directly into the soil.

2. Potted plants: many of the sunflowers sold in the flower shop are already potted adult plants, after buying home, you need to put the sunflowers in the best indoor light, and more sun is conducive to the accumulation of nutrients for plants, vigorous growth, and more flowering. After the sunflower blooms, the top of the plant is cut off slightly, so that the sunflower can bloom again, and the cut branches can also be inserted in the original pot to continue to grow new plants.

Second, how to maintain the sunflower after the seedlings.

The sun is sunny, daily maintenance should be more sun, even if it is summer exposure is not required, usually observe the surface of the soil whitish, dry and watered once. During the growth period, you can water the flowers with fertilizer every half a month, and you can choose Bika water-soluble fertilizer to promote its vigorous growth and more flowering.

The sun is sunny, and when maintaining it at home, you must give it enough light, even if it is summer exposure, you don't need to block it. The most suitable temperature for sunflowers to grow is 26-29, and when the temperature is lower than 15, sunflowers will stop growing. Sunflowers are afraid of waterlogging, and they must be watered in strict accordance with the watering principle of "seeing dry and wet".

The demand for fertilizer and water in sunflower is not high, and it is only necessary to apply compound fertilizer once during the plant growth period, and once before the plant flowering, it can be applied once with phosphorus and potassium fertilizer.

1. Illumination. Sunflower is a strong positive flower, sun-loving, when maintaining at home, be sure to give it enough light, even if it is summer exposure does not need to be shaded, lack of light, it will affect the amount of sunflower and flower size.

2. Temperature. The most suitable growth temperature for sunflowers is 26-29, not afraid of high temperatures and low temperatures, the lower the temperature, the slower the growth rate of sunflowers, and when the temperature is lower than 15, sunflowers will stop growing.

3. Watering. Sunflowers like to grow in dry soil, not afraid of drought or waterlogging, too much watering will make the root system of sunflowers rot. Therefore, during the growth period of the plant, it must be given water in strict accordance with the watering principle of "seeing dry and wet".

Fourth, fertilization. The demand for fertilizer and water for sunflower is not high, only need to apply compound fertilizer once during the plant growth period to promote the growth of sunflower, and before the plant flowering, apply phosphorus and potassium fertilizer once to promote sunflower flowering.

5. Pruning. When the branches and leaves of the sunflower are senile, long, and the amount of flowers is reduced, the old branches can be re-pruned, leaving only 5-10cm of branches and leaves, so that the sunflower can regrow strong branches and promote its renewal and rejuvenation.

6. Cuttings. Don't throw away the pruned sunflower branches, find a flower pot and insert it directly in the soil, put it in the open air, don't need to take care of it, the sunflower can take root by itself, grow crazy and bloom more.

If the local environment is warm, sunflowers can be planted in February, if it is the northern region, it is still relatively cold in February, and it is easy to freeze to death when planting sunflowers at this time.

It is best to plant in April and May in the northern region, the temperature at this time has basically stabilized at about 20 degrees, and it can germinate in a relatively short period of time after sowing.

If the sunflower is in the south, it can be planted in February, if it is in the north, the weather in February is still very cold, and it is easy to freeze to death when planting sunflowers.

The northern rough planting of sunflowers is generally after April, when the temperature has stabilized, and the survival rate is still relatively high after sowing sunflowers. Sunflowers are full of vitality, so you can just sprinkle the seeds on the ground when sowing seeds.

Hello! Sunflowers survive the winter.

Sunflower Winter Protection:

1. Reasonable fertilization.

In order to make the sunflower not easy to freeze to death in winter and have good resistance, a little more phosphorus and potassium fertilizer should be applied in autumn to improve the overall resistance. If you have been applying phosphorus and potassium fertilizer to your sunflowers, you don't need to add more. If you haven't applied phosphorus and potassium fertilizer before your sunflowers, you can make up two or three times while it's not too cold.

2. Enter the room early.

Sunflowers are more afraid of the cold, so they should enter the house early in autumn. Even if the temperature is low in winter, it will freeze to death no matter how you raise it, and entering the house early in autumn can make the flowering period a little longer. It is recommended that when the minimum temperature reaches about 10 degrees, you can go into the room for maintenance, so that you can continue to grow and continue to bloom when the temperature is high at noon.

3. Trim properly.

When the temperature drops to about 10 degrees, you can prune the sunflowers, and cut off the branches that are too tender and too thin, leaving only the thick and ripe. On the one hand, this improves the resistance of the plant, and the weak branches are easy to freeze to death. On the other hand, let the branches that have not fully aged age age and grow strong as soon as possible, so that they are not easy to frostbite and freeze to death in winter.

If there are new shoots and sprouts, they can also be cut off in time to save nutrients.

4. Ensure sufficient light.

It is very important to raise sunflowers in autumn and winter and ensure sufficient sunlight. In summer, even if the sun is not very abundant, at most there are fewer flowers and the branches grow wildly. In winter, if there is not enough light, it is very easy to freeze to death.

After entering the room, the sunflower can be maintained on the south window and closed south balcony to avoid cold wind. Even if you don't go inside and keep it outside, keep it in a well-lit place.

5. Exposed sunflowers prevent freezing rain.

For sunflowers that are not ready to enter the house, it is necessary to prevent freezing rain in autumn and winter. Otherwise, even if the temperature is above 5 degrees, you may get frostbite or freeze to death. One of my pots of sunflowers was raised in the open last year, and the lowest temperature was about one or two degrees, which originally grew well, but after a freezing rain, it was all over.

6. Control watering.

To raise sunflowers in winter, you must control the watering, give water once every ten days and a half months, and the potting soil will be a little moist, otherwise even if the temperature does not reach the lowest critical point, it is easy to freeze to death. Watering to see the performance of the sunflower leaves, and don't water the leaves if they don't have symptoms of lack of water. When the temperature is relatively low, there is no problem if you don't water it for about 20 days.

7. Artificial insulation.

When the indoor temperature is too low, if you want to let the sunflower survive the winter, you can keep it warm artificially. The easiest and most effective way is to build a small greenhouse and put the sunflowers in the greenhouse. The production method is also very simple, make a shelf with bamboo or something, cover it with a transparent and thick plastic bag or plastic sheet, and leave a little ventilated place below, the anti-freezing effect is particularly good.

If you find it troublesome, you can put a plastic bag on the flower pot in the morning and evening. In case of a cold snap, the temperature is really low and low, wrap the flower pots in old clothes at night, uncover the sun during the day, and ventilate.

Sunflower can be planted in February, because the temperature will slowly rise after February, and more precipitation, can meet the growth conditions of sunflower, when planting, first of all, the seeds should be evenly sprinkled in the soil, and the temperature will be maintained above 20, and then the seedlings will be planted after the sunflower seeds germinate, and at the same time, the chain base should control the light to ensure the normal growth of the sunflower.

1. It can be planted

Sunflower can be sown in February, in the planting process, the temperature of the environment where the seed is located needs to be controlled at more than 20, to promote the development of the seed, and when the cold snap hits, it needs to be placed in the window for maintenance, after the sunflower can be moved out of the window.

2. Correct fertilization

Sunflower fertilizer requirements are not high, maintenance can be applied to it once a month compound fertilizer or urea, in May and June when the temperature increases, it is necessary to increase the amount of fertilizer, so that the petal color of the sunflower is more gorgeous, to achieve the effect of prolonging the flowering period.

3. Reasonable watering

In the process of maintaining the sunflower, it is necessary to water reasonably according to the moist condition of the potting soil, watering once every 2-3 days, you can use spray to replenish its water, and you can also choose mud pots, plastic flower pots and other containers that can seep water at the bottom to plant sunflowers, so as to help water penetrate into the soil to meet the growth needs of sunflowers.

4. Prevention and control of pests and diseases

When maintaining sunflowers, it is necessary to control aphids and bulbous scale insects, you can spray imidacloprid and other potions before germination, and use imidacloprid and cypermethrin to kill aphids after germination, and for bulb scale insects, you can spray the plant with engine oil emulsion and Lesben solution in late May, so as to ensure the healthy growth of sunflowers.

When cultivating sunflowers in winter, the ambient temperature needs to be controlled between 15-25 degrees, and the frequency of watering needs to be controlled, which can be watered once every half a month, and the sunflowers need to be placed in a place where they can get sunlight, so that they can receive enough sunlight, and they need to stop fertilization, so that the sunflowers can survive the winter smoothly.

1. Suitable temperature

Sunflower is suitable for growing in a warm environment, when breeding sunflower in winter, if the ambient temperature is lower than 5 degrees, it will cause the plant to be frostbitten, so that the sunflower dies, the sunflower needs to be moved to a warm room for maintenance, and the ambient temperature needs to be controlled between 15 degrees and 25 degrees, so that the sunflower grows healthily.

2. Control watering

When breeding sunflowers in winter, if watering too frequently, it will lead to water rotting plants, so that sunflowers wilt and die, you need to control the frequency of watering, you can water once every half a month, watering needs to keep the temperature of the water and the indoor temperature consistent, so as not to make cold water frostbite sunflowers.

3. Lighting conditions

Sunflowers need sufficient light during the growth process, and when cultivating sunflowers in winter, they need to be placed indoors in a place where sunlight can be irradiated, so that sunflowers can receive all-weather natural light, so that they can fully photosynthesize, and plant fill lights can also be used to supplement the sunflowers.

4. Stop fertilizing

When maintaining the sunflower in winter, you need to stop fertilizing, because the sunflower will be in a semi-dormant state in winter, at this time, if too much fertilizer is applied, it will lead to fertilizer damage to the plant, which will make the sunflower rot roots, you need to wait until the weather warms up and the temperature rises, and then apply fertilizer to the sunflower to make it grow vigorously.