Garden expert Helen Chesnut looks at the ins and outs of caring for dahlias. (Credit: Getty Images) Q. I have a small collection of dahlias that have grown and bloomed well for several years in my ...

Q. I have a small collection of dahlias that have grown and bloomed well for several years in my garden, without being dug up, divided and replanted. I garden at the coast. How do I decide when it is ...