Yes, there are bulbs shown in the photo of the bag, that's what confused me. I'm no expert, so I thought perhaps some varieties come from bulbs or that a tuber starts life as a bulb.
Is it a good idea to plant a dahlia tuber in the middle of a patch of daffodils or crocuses? I thought that this could mean I get daff flowers in the spring, immediately followed by dahlia flowers in the summer in the same spot.
Also, when should I sprinkle the soil with epsom salts to get better flowers? Do you do this just before plants start flowering or when the shoots appear?
By the way, when I last bought dahlia tubers from Lidl, one of them was snapped in various places, so this time I'll check more carefully. Ironically, the snapped-up one grew very well whilst the perfect one failed to grow and completely disappeared when I next dug the soil in that spot.