On our walk in the park, we also saw this little hillside full of periwinkle.  I love it.  It is an evergreen vine, and grows in the shade.  What a great combination.  Green all winter, then purple blossoms in spring.  All you have to do it plant a few sprigs of it, and it will take off and cover the ground.  It comes variegated too:  that's pretty.

 

It is kinda small, but you may still see some if you look for it.

 

 

HAPPY SPRING!!!