Dahlias

Dahlias

So many flowers and colors bursting from a dahlia bulb looks truly magical! The dahlia is a plant with tuberous roots, native to the region of Mexico, which was brought to the Netherlands at the end of the 19th century and gradually spread throughout the world. Today, there are thousands of dahlia varieties on the market with different stem heights, from dahlias with a compact growth that are limited to a height of half a meter to dahlias that have a very vigorous growth and reach a height of two meters. We will find varieties of dahlias with different shapes and sizes of flower, as well as in incredible colors, from white, cream, yellow, to pink, purple, orange, red, and even dark red that is almost black. Dahlias need several hours of sunshine to give us their rich flowering. So we choose a sunny spot in our garden, protected from strong winds, to plant them. To plant dahlias in a pot on our balcony, we choose points with a south or west orientation. Dahlias can grow in almost any type of soil, however they prefer fertile, loose soils with good drainage, which is why we incorporate manure and compost when planting. For potted dahlias, we use a quality all-purpose potting soil that contains perlite for better drainage and aeration.

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The dahlia has no special requirements for watering and fertilizer. If the soil where we will plant them already has relative humidity, the dahlias do not need watering until they sprout because otherwise they may rot. We start watering when the plants start to grow, once a week in the spring season and twice a week in the summer season. Regarding the dahlia’s fertilization needs, we add one tablespoon of complete fertilizer to each dahlia when the first leaves develop and repeat monthly until the beginning of flowering.