Pansies are your best bet.

Pansies.

They can handle a frost down to about 20°F without flinching, which is more than most early spring flowers can say. Snapdragons and violas are close seconds, but pansies are the ones you can plant in March and not panic when April throws a cold snap.

They don’t just survive—they keep blooming through it. The flowers might look a little rough for a day, but they bounce back. And they come in every color you’d want, so you’re not sacrificing looks for toughness.

If you’re worried about a late frost, bury the roots an inch deeper than usual and mulch around them.