The Virtuoso dahlias are making their debut this year with five colors: Pinkerific, Classy Carmine, Vibrant Violet, Dayglo ...

Shorter but equally showy is the candy-pink, semi-double Dahlia 'Fascination'. Again with dark leaves, this is classed as a dwarf bedder even though it's 3ft tall.

Q: A dwarf dahlia I am growing in a container looks very healthy but has stopped blooming. — Janie Hammond, Chicago A: Give dahlias (Dahlia hybrids) at least five hours of full sun, well-drai… ...