A: Dahlias are native to Central America and are not hardy in cold winters. Where winter temperatures drop below 20 F, gardeners have to dig up the tuberous roots of common dahlias and store them ...

It's easy to fall in love with dahlias. Their massive flower heads are visual dynamite in a fall garden—and they look just as beautiful in a vase after you cut and arrange them. Dahlias are grown from ...