Adding color to shady spaces can sometimes be a challenge, but with this native wildflower the task is an easy one. Yellow Trillium, or Trillium luteum, features sunshine-yellow flowers with three petals amid stylish mottled, mid green leaves. It grows only 6-12″ tall, making it a natural for tucking into the space between evergreen shrubs, under deciduous trees or at the front of a darkened border. Perfect for wooded sites and rock gardens. A native wildflower to the U.S., Yellow Trillium can often be found along trails in state parks during the early weeks of spring. Butterflies love this sunny little perennial, too.