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CPH Certified Professional Horticulturist VIP Practice Exam
CPH — The CPH (Certified Professional Horticulturist) credential is administered by AmericanHort (formerly the American Nursery & Landscape Association); the real exam consists of approximately 150 multiple-choice questions over 3 hours, requiring a 70% passing score, and covers plant science, soils, nutrition, pest management, irrigation, propagation, and business practices.
30
Questions
180m
Time Limit
70.00%
To Pass
Question 1 of 30👑 VIP
A nursery manager notices that a shipment of container-grown Rhododendron cultivars has begun showing interveinal chlorosis on the youngest emerging leaves, while older leaves remain green. Soil pH tests return a reading of 7.2. Which of the following is the MOST likely cause, and what is the most appropriate corrective action?
Questions 2–30 and full explanations are VIP-exclusive.