AT A GLANCE
How tall do dahlias grow?
What height can dahlias reach?
Dahlias can reach a height of up to 2m to reach. However, this only happens in exceptional cases. Most varieties grow up to 80 to 120 cm high with their long and strong stems.
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However, the height of the dahlias does not only depend on the variety. It also varies greatly depending on the Location and the nutrient content in the soil. A sunny and warm location paired with a good water and nutrient supply mean that a dahlia can reach its maximum height.
Which dahlias grow the biggest?
The so-called Cactus Dahlias grow the highest. They grow up to 200 cm high under optimal conditions. However, they usually only reach a height of 180 cm. This dahlia variety is almost predestined as a cut flower. However, they require plenty of water for their long stems both in the ground and in a vase.
Which dahlias tend to grow small?
The smallest dahlias usually reach a height of 30 cm and call themselves Dwarf Dahlias or beet dahlias. They are perfect for beds, pots and even window boxes(€40.00 at Amazon*) suitable. Its maximum growth height is 40 cm.
What should be considered due to the growth height of the dahlias?
Towering dahlias cause a stir, but they also have quite a few Disadvantages.
The long stems run the risk of snapping or even breaking off in wind and rain. For this reason, the high-growing dahlias should be placed in a sheltered position planted and be supported.
Furthermore, the recommended planting distance increases with increasing growth height. Tall varieties should be planted at least 80 cm apart. The rule of thumb is: When planting, orientate yourself to half the growth height.
Tip
Plant dahlia bulbs in good time
who the dahlia bulbs planted too late reduces the chance of the plants reaching their final height. So remember to get the tubers into the ground in good time!
