1、 Soil

Dahlia should fully meet its environmental requirements when breeding. The sandy loam with good drainage is generally equipped with nutrient soil to meet its needs. It usually uses five parts of garden soil, two parts of rotten leaf soil, two parts of sand and one part of rotten organic fertilizer to meet its requirements for soil

2、 Light

Dahlia requires sufficient light, because it is a long sunshine flower. Too dark environment will make Dahlia grow and bloom, which will adversely affect the normal growth of plants

3、 Moisture

Dahlia requires that the soil should be kept slightly wet, which should not be too dry or too wet. If it is summer, pay attention to the drainage after rainfall at any time to prevent ponding from damaging the root system

4、 Fertilization

Dahlia requires sufficient fertilizer. Generally speaking, when planting planting balls in early spring, it is necessary to apply a sufficient amount of rotten organic fertilizer into the planted flower pot or land as the base fertilizer. Thin liquid fertilizer can be applied every 10 days during the growth period

5、 Temperature

Dahlia is a plant that is afraid of both cold and heat. Generally speaking, when the low temperature at night is lower than 10 ℃, we should do a good job of cold prevention. When the temperature at noon in the day reaches more than 25 ℃, we should be prepared to do heatstroke prevention and cooling. The ideal growth temperature is between 15 ℃ - 25 ℃, so it can grow better

6、 Precautions

1. In the maintenance process, attention should be paid to avoiding sunshine exposure and ponding after rain in summer. Dahlia has a large number of diseases and insect pests. It should be observed at any time during the maintenance process and controlled at the initial stage to avoid unnecessary damage

2. Dahlias are tall and have heavy flower heads. It may fall down due to weather or man-made reasons during maintenance. It is generally necessary to support it by using pillars in the middle and late stage of its growth. At the same time, because its root system is relatively large, it is best to bury the pillar in the soil when planting the bulb, so as to avoid damaging the root system of Dahlia when setting up the pillar in the later stage, and even causing the death of the seed ball