I wrote about amazing frost flowers in Missouri Gardener. Just click Have you ever seen a frost flower?
Yellow ironweed (Verbesina alternifolia) and white crownbeard (Verbesina virginica) can create frost flowers. White crownbeard is known as frost beard.
They amaze me. When neighbor Bill told me about them, I thought he was pulling my leg. So he went out, armed with a camera along with his deer hunting buddies. He came back with photos to prove they exist. I’ve never seen one. You can only find them in that precarious season between fall and winter.
Scout out the area while you can still identify the green plant known as ironweed (Verbesina alternifolia)