Euphorbia polychroma: An undemanding perennial, Euphorbia polychroma offers a pleasing contrast of colors on a neat, almost architectural form. It grows to about 15in and produces a splendid show in May from bright yellow bracts. Their color is long lasting, but changes to rose-bronze as they age above the green foliage. A sensational ground cover plant or accent in a sunny garden. Quite tolerant of hot, dry conditions (but not the heat and humidity of the South).
This is not a shade plant, but the picture is good. That being said Euphorbia polychroma is a very hardy perennial. There are so many euphorbias, but this one is wonderful. Dies back to nothing in the winter, one of the first plants to bloom in the spring. Mine grew in absolutely perfect mounds every year. I am not sure how this ended up on shade gardens, but this plant requires full sun.
Ostrich Fern is a tough perennial that loves moist, shady spots. Try more of our favorite flowers for wet soil: http://www.bhg.com/gardening/flowers/perennials/flowers-for-wet-soil/?socsrc=bhgpin061614ostrichfernpage=10