Not her real name, this is another flower I absolutely LOVE but I've lost track of what she is supposed to be called! Her color is difficult to describe. She is not purple. She is not rose. She is not even quite mauve. But boy is she gorgeous. In this photo, she is not fully unfurled, so she is prettier than this gives credit for.
Dahlia tubers should be planted after all frost danger has passed at a depth of 4-6". They bloom in late summer through the first killing frost. Pinching can result in greater branching and more flowers.
Tubers reproduce and can be lifted in fall, divided, stored over winter, and replanted the following spring.
Tubers will have a visible growing eye.
Dahlia tubers range in size from a thimble to a giant sweet potato. The size and appearance of the tuber has no relationship to the ultimate plant and blooms. All that is needed for wonderful dahlias is a growing eye.