Here's another stalwart for the shade garden and one I wouldn't be without. Pulmonaria tucks in nicely between other plants and is one of the first to emerg in my zone 3 garden. Evergreen in warmer climates I believe. Most have variegated leaves, often with silvery spots of various degrees; some almost totally silver to really brighten up the shade. It flowers in the early spring often with blooms that change from pink to blue to give you two for one. Often the first leaves with the flowers are smaller, then new growth is larger after the flowers are gone. Some plants are prone to mildew but just cut then back and they will put out fresh new foliage.