In this week's Ask the Gardener, we also tackle the thorny question of pruning hydrangeas. And if you've got a 'Live Forever' plant, we've got some tips to help that live up to its name.

When is a good time to divide and transplant my "Live Forever"? What about some of the other types of sedum or other succulents in my garden? "Live Forever" is a plant of many names! This name is ...