Lesson 4 – Professional Herbalist Course Year 2: Spring 2020 You must first complete Lesson 1 – Professional Herbalist Course Year 2: Spring 2020 before viewing this LessonPlease sign up for the course before starting the lesson. Lesson 3 - Professional Herbalist Course Year 2: Spring 2020 Lesson 5 - Professional Herbalist Course Year 2: Spring 2020 Back to: Professional Herbalist Course Year 2: Spring Term 2020