Next Course Dates: 6 April to 4 May 2023

Register before 30 January 2023 to receive a 20% discount

By the end of this course:


You will be able to plan and design a successful horticultural therapy or therapeutic horticulture program based on research evidence and theory.

You will have the practical knowledge, skills, and tools required to plan and design a new therapeutic horticulture project or to improve on an existing horticultural therapy project.

You will be confident that the programs you are designing and delivering are based on sound logic.

You will be able to simply explain how your program works to potential funders and future clients, thus increasing your opportunities to make an impact.

Is this course right for me?


  • I have an idea for a horticultural therapy or therapeutic horticulture project, but don't know where to start.


  • I feel that I could improve my programs, but don't know how.


  • I would like to increase my success when applying for funding by showing how my projects work.


  • I want someone to guide me to develop my own horticultural therapy program or project.


  • I like to follow structured learning objectives.


  • I am open and like to try new things.


  • I like to have fun and learn with like-minded people.


If you answered yes to the questions above, then you are in the right place! I look forward to connecting with you!

Meet your instructor


Leanne Idzerda, PhD

I believe that access and connection to nature can help people to live healthier simpler lives. With a PhD in public health, I have undertaken many years of research on nature-based interventions to improve health, including social and therapeutic horticulture. I truly believe that connecting people to nature can heal the body, mind, and spirit.

After many years of listening to and working with nature-based practitioners, I heard the need for research support of their programs. I started the PurNature Design Certificate Program to help practitioners to conduct research within their therapeutic programs. The hope is that practitioners like yourselves can design and evaluate the success of your own programs and thus push the whole field forward.

Frequently asked questions (FAQ)


What content will this course cover?

This course consists of 3 modules:

Module1: Evidence-based horticultural therapy practice

Module 2: Designing a complex program using a systems approach

Module 3: Developing a logic model and theory of change


How is this course structured?

This course is a blended learning opportunity. You will be required to spend up to one hour per week reviewing the materials for that week (audio & video lectures, readings, take home exercises).

Each week the class will meet virtually for 2.5 hours on a Thursday evenings from 18h-20h30 (EST).


How long is this course?

This course is a 4 week course.

The course dates are 20 October, 27 October, 3 November, and 10 November from 6-8:30pm.


Is this course virtual or in-person?

All of our courses are currently offered 100% virtual. You can participate from anywhere in Canada, or even the world!


How many hours per week should I expect to commit to this course?

3 hours per week.


Can I skip the in-class portion?

No, out of respect for your fellow learners and in order to receive the certificate, you must complete all the at-home lectures and attend all the in-class hours.


What if I am sick or otherwise indisposed?

You will be provided with access to an alternative if the need arises.


How long do I have access to the course?

After enrolling, you have unlimited access to the course for as long as you like - across any devices you own. You can also download the materials to your own computer so you can keep them as a reference offline.


What if I am unhappy with the course?

It is important to me that this course provides value for you, so if you are unsatisfied with the course contents, feel free to contact me and I can adjust the course to ensure it meets your learning goals or alternatively provide you with a full refund.


Do you offer any other courses?

Three other courses will be offered over the next few months:

(1) Design a HT/TH intervention that works

(2) Prove the impact of your HT/ TH program

(3) Showcase your success


Can I use this course towards registration with the Canadian Horticultural Therapy Association (CHTA)?

Yes, I work in close contact with the CHTA and this course does count towards registration.

More information on the professional registration process can be found here: https://www.chta.ca/professional-registration


When will this course be offered again?

This course will be offered again in February 2023, depending on demand. Enter your email below to be kept informed of upcoming courses.


Where can I learn more about horticultural therapy in Canada?

The Canadian Horticultural Therapy Association is a great place to start. The mission of the CHTA is to promote the use and awareness of horticulture as a therapeutic modality.





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