Tall flowers bring so much drama to a landscape ... above whatever composition you put it in," Dwyer says. Delicate blue-green foliage adds to the ethereal aura of this early summer bloomer ...

The cultivar "Everest Blue" is a tall-growing plant, 20 to 26 inches, that was developed for the cut flower market. Ageratum can be grown in the garden or in containers. Need a break? Play the ...