So for those of you who asked about "sweet leaf". I got in touch with Karyn Sanders and she said it is monarda fistula also known as bee balm.
Even the term 'bee balm' is problematic as there are probably hundreds of plants known by the same name depending on where you are.
It is vital that we use scientific terms so that we all know that we are speaking about the same plant.
Thank you for the questions about this.