Dahlias are bulbous plants. The older the dahlias are, the larger the tubers they have and the more appear on one and the same plant. Since dahlias are not hardy and therefore have to be dug up in autumn for the winter, you can see at first glance how big the tubers have become.
The larger, the bushier the individual plant becomes. However, if there are too many tubers, dividing the plant will also do you good. This saves you having to buy new tubers and you can multiply your dahlias yourself.
Dividing Dahlias
Dahlias should be divided in spring before they are planted. You can simply pull the tubers apart. If these have grown together too tightly, you can also cut the tubers apart with a knife.
Disinfect interfaces with powdered charcoal
Make sure that the interfaces, i.e. the wounds, are kept as small as possible. If you want to be on the safe side, you can disinfect them with charcoal powder.
Pay attention to individual shoots
It is also important that there is always one, preferably two or three shoots per tuber. It's easy to tell because they can be seen in spring.
The divided dahlia tubers can now be planted again and you can enjoy the ever-growing flowers. Because two or three years later it can be shared again.