Bulbs

The dahlia

How to water the dahlia

The dahlia is a plant that is more sensitive to heat. Therefore, in winter it should almost never be irrigated while it is necessary to significantly increase its wetting during the hottest periods. Especially after flowering, the dahlia is very sensitive to a possible drought so in this case it is good to check the soil of the plant often. In addition, the dahlia should also be watered after annual fertilization. During the hot season, which runs from April to October, the dahlia needs a lot of water and it is therefore essential to irrigate it deeply and also to keep the soil moist. During wetting, if any water leaks from the vase, it must be thrown away. In fact, any stagnation could damage the flowers. The dahlia loves a humid climate so it is recommended to humidify the plant from time to time.

How to cure dahlia


Generally, the dahlia is planted at the end of winter. It is preferable to choose a sunny or semi-shaded space and it is possible to place the plant directly in the ground or in a pot. In order to obtain more shrubs, it is advisable to often pinch the new shoots, thus favoring the new branches. When the dahlia is planted, it is advisable to spread the tubers well and surround them with fresh soil. To preserve the flowers from year to year, it is good to remove the tubers from the ground as soon as the plant tends to turn yellow. These parts must then be washed thoroughly and left to dry in the sun. Subsequently, the tubers are sprinkled with a good fungicide and placed together with sawdust in a dark, cool and dry place. They can be planted again in late winter.

How to fertilize the dahlia


To fertilize the dahlia correctly, it is necessary to proceed every 10 or 12 days with a specific fertilizer for bulbous plants or flowering plants. The fertilizer for bulbous plants is rich in substances such as phosphorus and potassium which help maintain the bright color of the flowers and favor the conservation of the bulbs. Among the fertilizers for flowering plants, it is advisable to use a fertilizer containing guano (natural organic substance) and is in liquid form. The most suitable soil for the dahlia is a soft and airy soil, previously fertilized with organic fertilizers and compost, possibly highly draining. Soil preparation is a very important phase because the dahlia needs a lot of nutrients to grow luxuriantly. On the market there are also soils containing a mix of sand,

The dahlia: Diseases of the dahlia


The dahlia can easily be attacked by aphids. It is important to check their presence on the leaves on a weekly basis. It can be attacked by moths of various kinds which tend to attack the stems and plants. In addition, it is prone to a disease called white sickness and is often chosen by some insects to deposit the larvae. To prevent various diseases it is advisable to space the seedlings during planting, this will guarantee less dense vegetation and therefore also more light and more air. Avoid stagnant water that could attract parasites, lovers of wetlands. Furthermore, waterlogging could cause root rot. The dahlia can also be treated at the time of flowering with pesticides and agents that can counteract fungi and molds.

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