Can You Split Dahlia Tubers?

Can You Split Dahlia Tubers?

Got a Dahlia tuber that is getting quite large and out of hand? Then probably want to split it and get yourself some free plants, but is this possible? Can you split Dahlia tubers? Let’s have a look and find out.

Can You Split Dahlia Tubers?
Can You Split Dahlia Tubers?

Can You Split Dahlia Tubers?

The only thing that can go wrong with splitting dahlia tubers is that you don’t bring any neck with you. The neck is where the dahlia grows out of the tuber, if you don’t have a neck on your newly split tubers then they will not grow.

Tuber Necks
Tuber Necks


The best time of year to split dahlia tubers is in spring once buds have started to develop, you can then make sure each tuber you separate has plenty of rhizomes, a bud and a neck.

If you do this then chances are you will be successful when splitting dahlia tubers. Another thing to do is just run some boiling water from a kettle over your knife before cutting.

If you are at an allotment and don’t have access to a kettle then just give it a good wash.

More on Dahlias

Dahlias are simply stunning summer flowers, the pop pop head produces amazing displays. The plant is a member of the Asteraceae family along with daises, asters and marigolds.

Usually grown from a tuber but they can also be grown from seed. The tubers require special care over winter here in the UK and many growers end up with an almost fanatical devotion to their dahlias.

Despite not being able to survive winter outdoors in most of the UK they actually thrive in our summer conditions. The moderate but wet climate we have is absolutely perfect for them.

Dahlia

Dahlias make the perfect container flower and are commonly grown this way. Growing them in containers also makes preserving the tuber over winter a lot easier.