Dahlia in the breeding to fully meet its environmental requirements, drainage good sandy loam, generally to meet the needs of its configuration of nutrient soil, usually use five parts of garden soil, two parts of rotten leaf soil, two parts of sand plus one part of rotten organic fertilizer, mix to meet its soil requirements.
Dahlia on the light requirements is more adequate, because it is a long sunshine flowers, too dark environment will make Dahlia grow in vain, flowering adverse effects on the normal growth of plants.
Dahlia requires the soil to be kept slightly wet, which can neither be too dry nor too wet. If it is summer, we should pay attention to the drainage work after rainfall at any time to prevent water from damaging the root system.
Dahlia requires sufficient fertilizer. Generally speaking, when planting bulbs in early spring, it is necessary to apply enough mature organic fertilizer as the base fertilizer in the flowerpot or land to be planted. In the growing period, the thin liquid fertilizer can be applied every 10 days or so.
Dahlia is a plant that is afraid of both cold and heat. Generally speaking, when the temperature is lower than 10 ℃ at night, it is necessary to do a good job of cold prevention. When the temperature reaches 25 ℃ at noon, it is necessary to prepare for heatstroke prevention. The ideal growth temperature is 15 ℃ - 25 ℃, it can grow better.
1. In the process of maintenance, attention shall be paid to avoid sun exposure and ponding after rain in summer. Dahlia's number of pests and diseases is more, in the maintenance process to observe at any time, early control to avoid unnecessary harm.
2. Dahlia is tall and heavy, which may fall down due to weather or human factors during maintenance. Generally, it needs to use the prop to support it in the middle and later period of its growth. At the same time, because its root system is relatively large, so this kind of prop is best to bury the prop in the soil when the bulbous is planted, so as not to cause damage to the root system of Dahlia when the prop is set up later, or even cause the death of the seed ball.
