All study guide articles
7 articles, sorted by most recent.
ISA installation and establishment exam questions: planting, staking, and early care
Study guide for ISA Certified Arborist Installation and Establishment questions: planting depth, root flare, staking, mulching, watering, nursery stock, and establishment care.
June 20, 2026
ISA tree risk assessment exam guide: defects, targets, and mitigation
A practical ISA Certified Arborist tree risk study guide covering likelihood of failure, targets, consequences, defects, mitigation, and sample-style risk questions.
June 18, 2026
ISA pruning exam study guide: branch collar, reduction cuts, and structural pruning
A practical ISA Certified Arborist pruning study guide covering pruning objectives, branch collar anatomy, reduction vs. heading cuts, young-tree structure, common traps, and sample-style questions.
June 17, 2026
ISA Certified Arborist exam domains: what each section tests
A practical guide to the ten ISA Certified Arborist exam domains, what each one tests, and how to study domain by domain instead of guessing from mixed practice scores.
June 15, 2026
ISA Certified Arborist Practice Test: How to Use Mock Exams and Practice Questions
How to use ISA Certified Arborist practice tests, mock exams, and domain quizzes without wasting study time — including pacing, scoring, review, and what free questions can and cannot tell you.
June 15, 2026
How hard is the ISA Certified Arborist exam?
Pass rates, why first-time test-takers struggle, the four most-missed domains, and how to study so the exam feels easier than it is.
April 30, 2026
Tree biology for the ISA exam: CODIT, the cambium, and the branch collar
The three concepts that dominate the Tree Biology section of the ISA Certified Arborist exam — explained the way the questions actually test them.
April 30, 2026