Enrollment Options

Enrollment is easy. Mail-in or phone-in  your enrollment with a check, Visa or Master Card credit card information. Or enroll online through our secure Paypal online registration system. You do not need to have a paypal account to register online. Any credit card will be accepted. Click “other payment method”.

Payment must be made in full at the time of enrollment in order to hold a space in the class. Class size is limited, and classes fill quickly so early enrollment is advised. All students must enroll for each course in the series separately.

Secure online enrollment

Click to enroll online

Print Our Enrollment Form

Print the enrollment form from this website, or contact us to request a copy of the enrollment form and we will email you one.

Click to download the enrollment form


Fill out an enrollment form and send with payment (no cash, please) to:
Horticultural Therapy Institute
P.O. Box 461189
Denver, Co. 80246


303-388-0500 and ask for Christine.
Have the course name and a credit card number handy.

Cancellation Policy

No cash refunds will be given. Students who are unable to attend a class will be given credit towards future class tuition if they notify HTI at least three weeks prior to class. A $150 processing and materials fee will be charged at the time of subsequent enrollment. Credit must be used within 12 months. If you cannot attend a course, notify us as soon as possible so that other students on a waiting list may attend the class.

The Horticultural Therapy Institute reserves the right to cancel a class if a minimum enrollment number is not met. In the event of cancellation, students will be notified by mail/phone two weeks prior to class.

Discrimination Policy

The Horticultural Therapy Institute does not discriminate on the basis of race, religion, gender or sexual orientation.