In autumn, Petunia is suitable for sowing when the temperature is 20 ℃. When the seedlings grow to 5-6 leaflets, they can be transplanted. It is necessary to pay attention to the temperature control. The seedlings planted in the environment of 15-20 ℃ can grow stronger!
The temperature drops sharply at the end of autumn and the beginning of winter. It is necessary to take cold prevention measures in advance to ensure the growth of petunia in the environment above 0 ℃. Proper low temperature also helps to make Petunia become a strong and short plant type.
In autumn, when maintaining Petunia, we should pay attention to the loose and well drained sandy soil, keep the soil moist, sufficient light and avoid ponding after the seedlings are planted successfully.
Autumn is the favorite season for petunias, so there is no need to apply fertilizer. Water the soil sooner or later to make sure it is moist and sunny.
Petunia is suitable to be placed on the balcony facing south, East and West in autumn, so as to avoid being exposed to the sun.
Petunia's safe winter temperature is about 0 ℃. Basically, the outdoor temperature below 0 ℃ is the rhythm of its own life and death. In winter, Petunia will be put into the warm indoor environment, and the smiling Petunia may make your balcony more vibrant!
To maintain petunia in winter, the basin soil should be kept moist and watered once or twice a week. In winter, we should pay attention to the ice shaking performance of soil.
As the temperature continues to drop after winter, the metabolism of Petunia will become slow, and there is little demand for water and fertilizer, so we should operate according to the actual needs. The principle of watering is not to dry and not to pour, but to pour it thoroughly. Avoid rotting roots, fallen leaves or excessive growth of young branches due to water accumulation.
The water for watering flowers in winter must be exposed to the sun to make it close to the room temperature before use. It is better to water at noon when the temperature is high, so as to avoid watering at night when it is cold and frostbite the root.
The winter fertilization of Petunia depends on the actual situation, and nitrogen fertilizer can be used properly.
Closed balconies facing south, East and West are the best choice. In winter, the maintenance of petunias can effectively prevent wind, frost, rain, snow and other natural disasters from damaging them.
Spring is a good season for Petunia to sprout and blossom. Under the premise of sufficient water, it should be more baptized by the sun. Fertilizer can be applied once a week, using a thin layer of nitrogen fertilizer, in the bud stage should also be appropriate fertilizer.
It should be noted that the use of nitrogen fertilizer should not be excessive, which is easy to cause excessive growth, long stems and so on, leading to high plants and lodging.
In spring, the Petunia is suitable to be arranged on the balcony facing south, East and West. When receiving the sun baptism, pay attention to avoid exposure to the sun.
Petunia is not very resistant to high temperature. In summer with high temperature, pay special attention to cooling.
The specific method is: appropriate shade, water around the bottom and strengthen ventilation, re-use of water evaporation for cooling.
In summer, the basin soil is wet and dry. In the high temperature season of midsummer, the soil in the flowerpot is too wet, which is easy to cause Petunia to rot and cause death.
In summer, the water evaporation of basin soil is very fast, and the frequency of watering should be increased properly compared with other seasons. It is suggested to change it to 2-4 times a week, and do not water too much each time.
In summer, Petunia doesn't need to be fertilized. Pay attention to keeping water and sufficient sunshine (or not to be exposed to the sun).
When maintaining petunia in summer, it is suitable to place it on the balcony facing east and North, and do a good job of sun protection.
When the temperature is over 30 ℃, Petunia will grow badly and die. This phenomenon exists in the flowering petunias in spring and the newly sown seedlings in May June. They are unable to resist the high temperature.
Therefore, if you are in a high temperature zone and have any cooling facilities, it is not recommended to plant petunias in May June and summer.
