I did not want to hijack Lindsey's thread so: depending on the herb I usually dry leaves on a wire rack & cover them with newspaper so they do not get dusty. bulkier plants I bundle & hang upside down. I usually do this in my garage or attic, never in direct sunlight. it just dawned on me that the growing season will be over soon & I've been sleepwalking & need to dry as much comfrey & hyssop as I can while I can. I have a food dehydrator. the lowest setting is 94*. i'm wondering if the dehydrator would dry these leaves beyond being viable for medicinal purposes.