Azaleas are some of the easiest flowering shrubs for almost any part-shade garden. The huge clusters of bright, colorful flowers bloom heavily for weeks with virtually no effort from you. Great for use along foundations, in woodlands, along garden or lawn borders, or just about anywhere else, Azaleas are available in all colors. Long known as a staple of the Southern garden, Azaleas are actually hardy for all but the coldest regions of the country.