Pansies are a hybrid annual which will reseed. A cold hardy viola species, pansies come in a variety of colors. This year, I bought a cheery yellow - my favorite color - to compliment the purple plants already in the bed. I also made up 3 pots for my small deck.
What I like best about pansies is that they have 'little faces.' For me, these faces give pansies a charm and English cottage garden feel.
Easy to grow in sun or partial shade, pansies prefer well drained soil and can even survive freezing. Pansies are an economical and pretty flower for zone 5.