How to grow Dahlia Dahlia planting methods and precautions

Dahlia, as its name implies, is a very beautiful flower, it is true! People who have seen dahlias all admire its beauty. Such magnificent and rich flowers are not common and are even respected as the national flower in Mexico. So how to raise such beautiful dahlias? Next, let's learn about it with the editor.

How to grow dahlias

We spread the dahlia seeds evenly on the soil where the flowers are prepared, and then spread them evenly on the dahlia seeds with moist fine soil. Then we can cover it with a plastic film, which has a little gap with the soil, which is good for ventilation and moisture preservation. After sowing, the temperature of the planting environment should be kept between 20 °C and 25 °C. after about seven days, the dahlia seeds will germinate, and after that, the dahlias should be watered frequently to keep the soil moist. Always ventilate after sowing and shade when the seeds germinate, but when the dahlias come out neatly, remove the plastic film and move to a sunny place to plant.

Planting methods and matters needing attention of Dahlia

1. Soil requirements: Dahlia is suitable to be cultivated in fertile sandy soil with loose soil and good drainage.

2. Proper fertilization: dahlia is a fertilizer-loving plant, and there must be sufficient fertilizer supply, otherwise it is easy to cause the flowers to become smaller, the color dim and the ornamental reduced. According to the growth situation, cake fertilizer should be applied for 4 times and 5 times, thin fertilizer should be applied, and fertilization is prohibited when the high temperature is more than 30 ℃ in summer.

3. Water control: in general, the amount of watering should be reduced properly, which is beneficial to control the growth of the plant and make the stem of Dahlia thick, the plant short and the flower large. Spray water on the leaf surface as much as possible under the condition that the water content is basically satisfied in summer high temperature, at least twice a day to make up for evaporation loss.

4. Light environment: dahlias like semi-shade, the sun is too strong to affect flowering, the light time is generally 10-12 hours, when cultivating seedlings to avoid direct sunlight.

5. Temperature requirements: the temperature during the day should be kept at about 25 ℃, and if it exceeds 25 ℃, it must be ventilated and cooled down. When the night is below 10 ℃, the indoor temperature should be increased. After September, it is necessary to consciously increase the temperature of the surrounding environment during the day, so that the temperature is high during the day and low at night, and the larger temperature difference between day and night is very beneficial to the flower color and root swelling of Dahlia.

6. Humidity requirements: dahlias like cool climate, and 10-25 ℃ is the most suitable. Cooling measures should be taken in the high temperature season, spraying water to the leaves and the ground 3 or 4 times a day according to the weather conditions, in order to achieve the purpose of cooling and water control.

7. Precautions: the main problems of dahlias are powdery mildew, gray mold, bacterial wilt, virus disease and so on.

How to dwarf Dahlia

1. Select dwarf species

Plants will also have heredity. When planting, you should understand clearly, choose dwarf varieties, and do not choose those high varieties, otherwise it will be difficult to control when you buy them home.

2. Promoting dwarf cutting

If you want the dahlia to grow tall or not, you can cut a pot by yourself. The selection of axillary buds or bud cuttings of the mother plant of Dahlia can limit the plant height and is beneficial to the dwarfing of the plant.

3. Change the pot and curved root

The pot should be changed many times during the growth of dahlia. When changing the basin, you should cut off part of the excessive roots and bury the stem disk in the basin soil to promote the adventitious roots of the stem nodes. At the same time, pay attention to water control, squatting seedlings, so as to achieve the purpose of dwarfing.

What if Dahlia doesn't blossom?

1. Strengthen the lighting

Sufficient light is the key to planting dahlias, lack of light will cause branches to grow and thin, because of the lack of nutrients in the plant, it can not blossom or blossom less.

2. Strengthen fertilization

Sufficient basal fertilizer must be applied before planting or before plant germination. If the base fertilizer is insufficient, the times of topdressing can be increased appropriately.

3. Strengthen anti-freezing

If in relatively cold areas, the ground should be covered with some withered grass after winter, or the roots of dahlias should be dug out to dry and stored indoors, and then potted or planted before and after the Qingming Festival in the second year.

Through the above content, I believe you have a certain understanding of the planting methods of dahlias. Dahlia is colorful and adorable. It is one of the most famous flowers in the world. If you plant a pot at home, it will be absolutely magnificent.