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Horticulture Professionals


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Commercial Diagnostic Services

You may send commercial samples for diagnosis directly to the WSU Puyallup Plant Clinic and Diagnostic Laboratory. We no longer have a professional diagnostician on staff and University regulations do not allow Master Gardeners to handle commercial questions.

Horticultural Professional Training

Offered to a limited number of applicants once a year in conjunction with the annual Master Gardener Training, which is held once a week Thursday daytimes January through March. Training is the same as the Master Gardeners receive but without a volunteer commitment, so tuition is $795. The 2019 Class is currently full. We will begin taking full-tuition applications for the 2020 class starting in August.

Private Pesticide Applicator License

Information about pesticide applicator licensing is available from the Washington State Department of Agriculture. Study materials may be purchased at our office and some of the exams are also given at our office. Review the schedule and then call 1-877-302-4555 to make an appointment.

Washington State University