About four weeks after planting your tubers, your shoots will gradually appear. In late summer they have reached their final height and reveal their plump flowers in the most dazzling colors to the world. But how tall do dahlias actually get?
How tall do dahlias grow?
Dahlias can reach a height of 30 cm to 2 m, depending on the variety. Cactus dahlias are the largest with a maximum height of 200 cm, while dwarf dahlias only grow to 30-40 cm high. Growth height and location influence growth.
How high can dahlias reach?
Dahlias can reach a height of up to2 m. However, this only happens in exceptional cases. Most varieties grow up to 80 to 120 cm high with their long and strong stems.
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, warm location paired with a good supply of water and nutrients means that a dahlia can reach its maximum height.
Which dahlias grow the biggest?
The so-calledcactus dahlias grow the tallest. Under optimal conditions they grow up to 200 cm high. However, they usually only reach a height of 180 cm. This dahlia variety is ideal as a cut flower. However, they require plenty of water for their long stems both in the ground and in the vase.
Which dahlias are more likely to grow small?
The smallest dahlias usually reach a height of 30 cm and are calledDwarf dahlias or bed dahlias. They are perfect for beds, pots and even balcony boxes. Their maximum height is 40 cm.
What should be taken into account due to the height of the dahlias?
Tall dahlias turn heads, but they also have someDisadvantages.
The long stems run the risk of bending or even breaking in wind and rain. For this reason, the tall growing dahlias should be planted and supported in a protected location.
Furthermore, the recommended planting distance increases as the plant height increases. Tall varieties should be planted at least 80 cm apart. As a rule of thumb: base your planting distance on half the plant height.
Tip
Plant dahlia tubers in good time
If you plant the dahlia tubers too late, you reduce the likelihood that the plants will reach their final height. Therefore, remember to plant the tubers in the ground in good time!
