We group semi-cactus and cactus dahlias together - both are fully double and vary in size from small to giant, while their "spiky" shapes mean that rain weighs them down less, so they do not need as much staking as types with heavier heads. Together, cactus and semi-cactus dahlias are among the most striking available.
Cactus dahlias have petals that are narrow at the base and that frequently curve inwards while the petals on semi-cactus dahlias are broader at the base and are typically rolled in for part of their length. For broader petalled beauties, have a look at the rest of our of dahlias.
For strong establishment and the best flowering, we recommend using the Bulb Starter Rootgrow blend.
Your mail order Dahlia tubers are delivered by next working day courier.
If there is anything wrong with your plants when they arrive, Contact Us within 5 working days, and our friendly support team will sort it out.