08/27/2026
Certified Professional Horticulturist (CPH) Plant ID Exam: 29 Tested. 24 Passed!
What a day for the CPH program! Last Wednesday, **29 horticulture professionals and students took the CPH Plant ID Exam—the largest Plant ID testing group since 2022. And they brought their A-game: 24 of the 29 test takers successfully passed! 🎉
The day was about more than identifying plants—it was about maintaining the high standards of knowledge and professionalism that make the CPH designation meaningful. We’re especially proud to see students from Lake Washington Institute of Technology and Edmonds Community College participate, along with four employees from Squak Mountain Nursery, who all passed as a group!
A tremendous THANK YOU goes to the many people who gave their time, expertise, energy, and even their offices to make the exam possible. It truly takes a team to set up, administer, monitor, and grade an exam of this size:
👏 Andrew Barker, CPH — for his long-standing leadership, thoughtful support, and commitment to maintaining the caliber of the CPH program and exam.
👏 Chris Smith, CPH — for championing the CPH program and helping connect students and professionals with this opportunity.
👏 Stacey Thorne, CPH and Alice Harriott, CPH — for jumping in and helping every step of the way with enthusiasm and fresh eyes.
👏 Stacy Smith, CPH, EPC, Anju Neilju, CPH and Tim Gray — for stepping in to help monitor the large testing group and tackle the grading. And thank you, Tim, for remembering to capture photos along the way!
👏 Gretchen Tayler, CPH, EPC and Annabelle Nielsen — for helping coordinate the many behind-the-scenes details and welcoming students and test takers into the space for final studying.
👏 Elsa and the JB staff — for generously supporting the exam logistics, including Elsa giving up her office for the day!
And, of course, congratulations to all 29 candidates who put in the time to prepare and take the exam. Plant knowledge matters. Professional standards matter. And the people who invest their time to build both matter, too. Thank you to everyone who continues to strengthen the CPH program and help grow the next generation of horticultural professionals across Washington.