The real advantage in growing Dahlias from seed is that you get the best of both worlds. The first year will provide a very economical collection of bright flowers and each plant will produce tubers that can be carefully lifted at the end of the end of the season for storing and re-planting the following year.
Cactus Mixed produces large double blooms formed with slender pointed petals. This variety makes a lovely garden display and a superb cut flower because of its vibrant colour and its overall growing height of 90-120cm.
They always remind me of my 1950s swimming hats…
Half hardy perennial.