Not particularly related to the song, but witch hazel is a plant that grows in most of the eastern half of the US. I don't know much about the botanical side of it so I'll just say it looks kinda bushy until it blooms; when it blooms, the leaves get a spicky yellow look and smell kind like fragrant spices instead of a plant's usual sweet smell.

I've also found that witch hazel water is the perhaps the only reliable way to deal with chiggers