When To Plant Dahlia Tubers Uk. Dahlia tubers Started by BARNACLE BILL on General Gardening. Dahlia tubers can be planted outside when the risk of frost has disappeared.
To divide the tubers you will need sharp knife and some clean pots filled with a good quality potting compost. These tall and often top-heavy plants dont. Sarah Raven shows us how to pot up and plant your dahlia tubers once theyve arrived at your homeDahlias are tender tubers.
They are summer flowering border and pot plants very versatile with high success.
Plant the tubers out in the spring when the threat of frost is over. They prefer to be in a sunny location and spaced at approximately 45cm apart. Dahlias are prized for their variation in form and colour and are a relatively inexpensive subject in relation to the masses of flowers produced from just one tuber. Deadhead to boost flowering.
