Dahlias

Hi all,

I bought some Dahlias in small pots ready flowering in April. I kept them indoors at night as still quite frosty.

Anyways, I've potted them in to larger pots and they're really growing. Lots of buds and leaves, probably tripled in size. However they are not tall. It said on the label up to 1m tall but these are quite bushy with many flower heads but none growing tall!

Any ideas?

 

Probably not tall varieties, the label lied
Not unusual.
They might have been treated to dwarf them but I wouldn't have thought so.