When To Plant Dahlias

Posted in All Gardening Advice, Dahlias, on

Dahlias are some of the lowest maintenance, highest production cut flowers and garden plants you can grow. 

Here we share our tips on when to plant dahlias and other good to know information. 

When to plant  your dahlia tubers

Dahlias are tender tubers so they need to be started off under cover in early Spring, then planted out after the frosts.  If you plant them out before the frosts are over, they may get frosted and die, so pot them up in March or early April.

To get them started half-fill a 3 litre pot with peat free multipurpose compost and place the tuber in the pot with the central stem upwards and cover with more compost.  Don’t forget to label and water the pot, place is a nice warm spot, frost-free, so it can receive some warmth and light. 

After 2-3 weeks shoots will start appearing – some varieties may take a little longer, but as these shoots grow pinch out the tips of the main shoot (you can use a sharp knife or a squeeze between your thumb and forefinger), down to the top pair of leaves.

Then, as the plant starts to grow remove all but five shoots sprouting from the tuber.  It will feel harsh but by having only five stems, this will allow each stem to develop, grow strong and vigorous, resulting in lots of flowers!   

Your dahlia tuber will then flower from June to early December (particularly in a sheltered spot).  

They come in all different shapes and sizes, as well as some of the greatest colours, shop our collections today

If you need further advice, simply watch Sarah’s video below on how to plant dahlia tubers , or visit our step-by-step guide here