CH Study Guide 2026
Everything you need to pass the CH exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 CH Exam Format at a Glance
📚 CH Topics to Study (22)
✍️ Sample CH Questions & Answers
1. Tensiometers measure soil moisture by indicating:
Tensiometers measure matric potential — the suction force with which soil particles hold water — which indicates how hard plant roots must work to extract moisture.
2. Zoysiagrass is best characterized as:
Zoysiagrass is a warm-season grass prized for its dense, wear-tolerant turf and relatively slow growth rate compared to bermudagrass.
3. Air layering is a propagation method best suited for:
Air layering wounds a stem on the parent plant, packs the wound with moist sphagnum, and wraps it to encourage roots to form before the new plant is severed.
4. Which soil texture typically requires the most frequent irrigation due to its low water-holding capacity?
Sandy soils have large pore spaces that drain rapidly, holding little plant-available water between irrigations and requiring more frequent but smaller applications.
5. A distribution uniformity (DU) test for a sprinkler system measures:
DU compares catch-can volumes across the irrigated zone to determine how uniformly water is distributed; low DU indicates dry spots requiring over-irrigation elsewhere.
6. Which soil pH range generally maximizes nutrient availability for most landscape plants?
A pH of 5.5–6.5 keeps most macro- and micronutrients in plant-available forms and is the optimum range for the majority of landscape species.
🎯 Free CH Practice Tests
📖 CH Guides & Articles
What Practice Test Geeks adds beyond an AI chat for CH
An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:
- A timed, full-length CH mock exam — 200 questions in 240 minutes with a 70% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
- A fixed CH question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
- Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
- A printable CH cheat sheet you can print or save as a PDF.
- CH flashcards built from the same question bank.
- Free CH practice tests with the correct answer shown after each question.