VERY dried flowers ping...
So much of “science” is hoo-hah. But if it sounds good, you can get grants.
Mint and sage both give off scent. I wonder if they were placed there for that reason?
Also both have been used in a metaphysical way.
Mint is a near-essential herb for your cabinet because of its powerful healing ability. For healing spells and prosperity in all forms, mint is a desirable base.
Sage is used in magic for wisdom, psychic awareness, long life and protection.
Could be this was for protection and healing in their next life.
People back then looked a lot like cartoon characters.