There are all sorts of different definitions of 'herbs'. The American Herb Society defined herbs in the 1930's as: "Any plant that may be used for pleasure, fragrance, or physic".
Strictly speaking, 'herb' is simply a shortening of the word 'herbaceous', which in horticulture (or botany) means the type of plant which does not have a 'woody stem'. Herbaceous plants have softer tissue in the stem and tend to die back to ground level each year after flowering, to re-grow a complete new 'top' the next season. Many of the plants we refer to as herbs are like this, but not all.
The word 'herb' in the context of this course, and in the context it is commonly used today, refers to those plants which are useful because of their aromatic, medicinal, cosmetic, flavouring or repellent qualities. Herbs are plants which are used for 'food, medicine, scent, flavour etc.'
There are 6 lessons in this course:
Each lesson culminates in an assignment which is submitted to the school, marked by the school's tutors and returned to you with any relevant suggestions, comments, and if necessary, extra reading.