Providing research and education in plant-based medicine, essential oils, nutrition, and herbal healing.

Essential Oils

Organic compounds form the foundation of our program.  Study the botanical, medical, mental, chemical, and spiritual profiles of 71 essential oils.


What one puts into their body equates to vibrant health or a healing crisis.  Essential oils are a powerful complement to proper nutrition.


Herbal knowledge is an integral aspect of Essential Oil Therapy.  Learn the various uses of organic herbs and how to apply them appropriately.

The College of Botnical Healing Arts is Celebrating Our 23rd Anniversary!

We are dedicated to education and research in plant-based medicines.

This year we are focusing on expanding our community into local businesses
that are interested in adopting Essential Oil Therapy into their healing methods.  

Please support our school. 


All donations are tax-deductible. 


The College of Botanical Healing Arts is dedicated to providing excellent comprehensive education in a balanced curriculum of science, holistic healing theories, and practical clinical experience.
COBHA offers an exciting and unique state-certified 458-hour Holistic Health Certification program with two levels of training, 12 core courses.
We offer live classes and workshops at our Santa Cruz location, and our Online Level I Foundation Course in Essential Oil Therapy which can be completed online.

We Provide


Science puts essential oils on the map for modern medicine and Aromatherapists. Graduates have an advanced understanding of Chemistry and scientific research.

Holistic Healing Theories

COBHA is committed to treating the whole person by looking deeper into mental, physical, and spiritual aspects of people to offer natural preventions and cures.

Practical Clinical Experience

Students have diverse opportunities to practice in a clinical setting. It is a highly-valued aspect for our student’s professional development and tharapeutic acumen.

Essential Oil Therapy Certification

COBHA offers a 458-hour Certification Program with a rich comprehension in the art and science of essential oils, plants, nutrition, and herbal healing.

Live Classes

Weekly classes are held in Santa Cruz, CA in our beautiful classroom and extensive library.  Classes are lively with discussion, lecture, and hands-on experiments.

Online Courses

COBHA is proud to offer our Level One curriculum as an online course, welcoming students from around the world to have access to our educational excellence.

Our Online Course

Online Level I | Foundation Course in Essential Oil Therapy

The Online Level One Foundation Course offers students a 36-hour introductory course in the use and understanding of 23 Essential Oils through an exclusive digital curriculum of seven classes.  The College of Botanical Healing Arts provides an in-depth video experience of how essential oils work in the human body and mind, eliciting truth, beauty, and goodness in every class.

The course is an independent, self-study program.  It is unique and not offered to users anywhere else online.  This class is open to everyone with no previous aromatherapy training required. Course texts are:  Aromatherapy, An A-Z by Patricia Davis & Awaken to Healing Fragrance by Elizabeth A. Jones.  The student can begin with the first video immediately and study at their own pace.

The student participates with many experiments in methods of use, blending activities, case studies, short papers (usually 2 paragraphs), a quiz and a final exam.  The homework is usually less than 2 hours per class.  The overall experience helps the student to gain confidence in administering therapeutic uses of essential oils.

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Our Live Courses

Available in Santa Cruz, CA

We are proud to offer 13 unique essential oil courses. Each course is exciting, interesting, and elicits different skills from each student. Our Live Courses are held at our Santa Cruz, CA location.  Most classes can also be taken online.  Ask for details. One -day workshops can be taken for elective credits and all COBHA workshops are open to the public.

The Foundation Course in Essential Oil Therapy | Level I class is a prerequisite to all Level II classes.   Level II classes may be taken in any order *


*Clinical Practice Theory, and Clinical Internship must be taken last. Each hour of class equals one CEU.

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Our Workshops

Workshops are taught by a diverse array of highly respected instructors who offer a complementary  field of study to essential oil therapy.

Workshops topics range from Distillation, Ayurvedic Medicine, Vital Nutrition, Gardening with Medicinal Herbs, Research on Essential Oils and Chronic Conditions, Creating Lotions and Creams, Reflexology, Essential Oils For Animals, Mind/Body Therapy, and Meditation.

Workshops are a required component to the program.  They account for 15 elective credits or 60 hours.  There are a minimum of 3 workshops offered with each Fall, Winter, and Spring trimester.

Workshops take place at COBHA or, on occasion, in the field.

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Upcoming Workshops


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COBHA Newsletter

Sign up for our newsletter and receive updates about COBHA news, community events, and our various workshops.

We look forward to welcoming you into our beautiful community full of truly wonderful and vibrant students and instructors.  We are gardeners, academics, distillers, chemists, artists, and healers - passionate about holistic health and sharing the integrity of Essential Oil Therapy.