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CGM Training

TL;DR
  • CGM here means Certified Grounds Manager, awarded by the Professional Grounds Management Society (PGMS) after an exam and a portfolio.
  • The exam is 75 multiple-choice and true/false questions in 90 minutes; you need 80% to pass.
  • Prepare against seven illustrative subjects: chemicals and fertilizers, insects and disease, irrigation, management, soils, trees and shrubs, turf grasses.
  • The PGME portfolio is graded separately and has its own categories; do not confuse them with exam subjects.

What "CGM Training" Actually Covers

When grounds professionals search for CGM training, they are usually asking one of two things: how do I prepare for the exam, and how do I build the experience record that PGMS requires? Both matter, because the Certified Grounds Manager credential is not a single test. It is a two-part process administered by the Professional Grounds Management Society, and training that only addresses the exam leaves the second half untouched.

This article treats training as a complete pathway: confirming eligibility, learning the seven subject areas PGMS lists for the application exam, handling the online proctored test, assembling the PGME portfolio, and maintaining the credential afterward. If you want the broader definition of the credential first, start with What Is CGM Certification?, then return here for the preparation plan.

Identity check: "CGM" is shared by several unrelated credentials in other fields. Everything on this page concerns the Certified Grounds Manager credential from PGMS, the landscape and grounds management certification. Study materials, fees, and rules from any other "CGM" do not apply.

Confirm You Qualify Before You Train

The most expensive mistake in CGM preparation is studying for months and then discovering you do not meet the experience prerequisites. PGMS requires at least one year at your current facility, plus one of three combinations of education and experience:

Education BackgroundGrounds ExperienceSupervisory Experience
Relevant four-year degreeFour yearsTwo years
Two-year degreeSix yearsThree years
No qualifying degreeEight yearsFour years

The supervisory years are part of the total grounds experience, not additional to it. A candidate with a two-year degree needs six years of grounds work, at least three of which involved supervising others. For a fuller walk-through of how PGMS evaluates these combinations, see CGM Requirements: Eligibility, Prerequisites & How to Qualify.

If you are close but not there yet, training can start now. Many candidates use their final qualifying year to build the documentation habits the portfolio will demand later.

The Two-Stage Path: Exam, Then Portfolio

The credential unfolds in sequence, and each stage has its own deadline:

  1. Apply and pay. Fees depend on membership status (detailed below).
  2. Take the online exam. The initial testing window is 30 days, and the test is delivered online with an approved proctor.
  3. Complete the PGME portfolio. The portfolio is due within one year, with mentorship and evidence submission required.
  4. Maintain the credential. Renewal happens every three years.

Notice the asymmetry in time pressure. The exam window is short, so exam preparation should be largely finished before you begin the process. The portfolio window is a full year, but the work is slower and more document-heavy than most candidates expect. Planning both phases together is the core of effective CGM training. For scheduling details, see CGM Exam Dates: Testing Windows, Deadlines & Scheduling.

The Seven Subjects You Train On

The PGMS handbook lists seven illustrative subjects for the application exam. They are preparation headings, not a weighted blueprint: PGMS does not publish how many questions come from each area, and no subject is documented as the largest. Treat all seven as fair game and avoid over-investing in a single area on the assumption that it dominates the test. A deeper breakdown lives in CGM Exam Domains: Complete Guide to All 7 Content Areas.

Domain 1: Chemical and Fertilizers

Expect questions that test safe, effective, and legal handling of inputs on managed landscapes.

  • Reading and interpreting product labels, including application rates and restrictions
  • Matching fertilizer type and timing to turf, ornamental, and tree needs
  • Understanding what nutrient ratios on a bag actually mean
  • Safe storage, mixing, and application practices to protect people and water

Domain 2: Insects and Disease

This area rewards diagnostic thinking rather than memorized pest lists.

  • Distinguishing insect damage from disease symptoms and environmental stress
  • Principles of integrated pest management: monitoring, thresholds, and escalating responses
  • Cultural practices that reduce pest and disease pressure before chemistry is considered
  • Recognizing common problems across both turf and woody plants

Domain 3: Irrigation

Water management questions tend to be practical and system-oriented.

  • Components of an irrigation system and how they fail
  • Scheduling concepts tied to soil, plant type, and weather
  • Water conservation and efficiency practices
  • Troubleshooting uneven coverage and wasted water

Domain 4: Management

This is where the "manager" in Certified Grounds Manager shows up, and it often favors candidates with supervisory experience.

  • Budgeting, scheduling, and resource allocation for grounds operations
  • Supervising and developing crews
  • Safety practices and risk awareness
  • Communicating with clients, boards, and administrators

Domain 5: Soils

Soil knowledge underpins nearly every other subject, so weakness here tends to cause mistakes elsewhere.

  • Soil texture, structure, and drainage behavior
  • pH and nutrient availability
  • Compaction, aeration, and organic matter
  • Using soil test results to guide decisions

Domain 6: Trees and Shrubs

Woody plant care combines horticulture with long-term planning.

  • Selecting the right plant for the right site
  • Planting, pruning, and establishment practices
  • Recognizing stress, decline, and hazard conditions
  • Protecting trees during construction and maintenance activity

Domain 7: Turf Grasses

Turf is the bread and butter for many grounds managers, and questions reward practical agronomy.

  • Distinguishing cool-season from warm-season grasses and their management calendars
  • Mowing height, frequency, and cultural practices
  • Renovation, overseeding, and weed management strategies
  • Diagnosing thinning, discoloration, and stress

Key Takeaway

Because PGMS publishes no weights, build balanced competence. Rate yourself honestly on each of the seven subjects and spend your hours on the weakest two or three, not on the area where you already feel comfortable.

Exam Format and Logistics

The initial exam contains 75 questions in multiple-choice and true/false formats, with 90 minutes allowed. You need 80% to pass. PGMS does not publish how many of the 75 questions are scored versus unscored, so you should answer every item as though it counts. Our page on the CGM passing score explains how to think about that 80% threshold in practical terms.

Several logistics points deserve attention:

  • Pacing. Ninety minutes for 75 questions leaves roughly a minute and twelve seconds per item. That is comfortable for recall questions and tight for scenario questions, so practice reading quickly.
  • Proctoring. The test is online with an approved proctor. Confirm your proctor arrangement early rather than in the final days of your window.
  • Unverified rules. The public sources I reviewed do not establish whether the test is open-book, whether a calculator is permitted, or whether the exam is adaptive. Do not assume any of these. Ask PGMS directly and follow the instructions you receive when you register.

For a candid look at how demanding this format is in practice, read How Hard Is the CGM Exam?. Pass rates for the exam and the portfolio are not publicly disclosed, so any specific percentage you see quoted should be treated with suspicion; our overview of what the data shows on CGM pass rates explains what can and cannot be said.

Sequencing Your Preparation by Subject

Generic study advice is easy to find; what matters for this credential is the order in which you tackle the seven subjects. Soils sits underneath nearly everything, so it makes sense to study it first. Fertilizer decisions, irrigation scheduling, turf health, and tree establishment all depend on soil behavior. Management goes last for most candidates because it draws on judgment you already have and benefits from review rather than first-pass learning. Here is one workable arrangement for a six-week plan:

Week 1

Soils

  • Texture, structure, drainage, pH, and compaction
  • Practice interpreting a soil test report
Week 2

Chemical and Fertilizers, plus Irrigation

  • Labels, rates, nutrient ratios, and safe handling
  • System components and scheduling logic
Week 3

Turf Grasses

  • Seasonal management calendars for cool- and warm-season species
  • Cultural practices, renovation, and weed control
Week 4

Trees and Shrubs, plus Insects and Disease

  • Site selection, planting, pruning, and hazard recognition
  • Diagnosis and integrated pest management across plant types
Week 5

Management

  • Budgeting, crew supervision, safety, and communication
  • Scenario-style questions that mix several subjects
Week 6

Timed review

  • Full-length practice under a 90-minute limit
  • Targeted repair of the weakest subjects

Adjust the order to your background. A turf specialist might compress Week 3 and extend the tree and pest material; an arborist might do the reverse. The principle is simply to match time to weakness. For a complete study framework, see the CGM Study Guide: How to Pass on Your First Attempt, and once your knowledge is solid, the CGM Cheat Sheet works well as a final-week refresher.

Finally, practice under realistic conditions. Working through questions on the CGM practice test platform in 90-minute blocks teaches pacing and exposes the topics you only thought you knew.

Training for the PGME Portfolio

The second stage is where many candidates are surprised. The PGME portfolio is graded separately using a rubric, it requires mentorship and evidence submission, and it is due within one year. It has its own nine categories, which are portfolio categories and not exam domains. Do not try to study for the portfolio the way you study for the test, and do not merge the two lists in your notes.

Keep the two lists separate: The seven subjects above prepare you for the application exam. The nine PGME categories describe how your portfolio is organized and evaluated. Reading the handbook closely will show you the portfolio categories; mixing them into your exam outline will only create confusion.

Practical training for the portfolio looks quite different from exam prep:

  • Start collecting evidence now. Photographs, plans, schedules, budgets, and reports from your own projects are the raw material. Waiting until after the exam compresses your timeline.
  • Secure a mentor early. Mentorship is a requirement, not an optional extra. Identify someone credible who can review your work and give honest feedback.
  • Write for a grader. The rubric means evaluators are looking for specific qualities. Learn what the rubric rewards and organize each entry accordingly.
  • Watch the slide count. One PGMS page cites 150 to 200 slides while the handbook says 125 to 200. Because those sources differ, confirm the current expectation with PGMS before building your presentation materials.

The handbook carries annotations dated 2022 and no dated current blueprint is published, so verify any detail that affects your submission directly with PGMS rather than relying on older secondhand summaries.

Fees, Retests, and Renewal

Budgeting is part of training. The application fee depends on how you relate to the society:

Applicant TypeFee
PGMS member$200
Non-member$300
Join-and-apply$400

A retest costs $50. Do the arithmetic on membership before you apply: the gap between the member and non-member rates is $100, so joining first can change your total outlay depending on your circumstances. A full cost walk-through, including what else to budget for, is in CGM Certification Cost: Complete Pricing Breakdown.

Earning the credential is not the finish line. Certified Grounds Managers renew every three years by completing 25 continuing education units (CEUs), with at least 80% of them PGMS-approved. The renewal fee is $75, reduced by $25 for each year of membership. In other words, long-term members pay noticeably less to maintain the credential. Plan your CEUs across the three-year cycle rather than scrambling at the end, and favor PGMS-approved offerings to meet the 80% requirement comfortably.

Who Values This Credential

The CGM is aimed at working professionals who manage landscapes and outdoor facilities. Typical settings include college and university campuses, school districts, municipal parks and recreation departments, corporate and institutional campuses, healthcare and residential communities, and private landscape management firms. In these environments, the credential signals that you can combine plant science with operational management, which is exactly what the seven exam subjects and the portfolio are designed to demonstrate.

If you are comparing the credential to other career moves, our guides on CGM jobs, earnings, and the return on investment lay out the considerations in more detail. Specific salary figures are not published by PGMS, so treat any single number you encounter with caution and weigh the credential against your own local market.

Frequently Asked Questions

How many questions are on the CGM exam, and how long do I have?

The initial exam has 75 questions in multiple-choice and true/false formats, with 90 minutes allowed. PGMS does not publish the split between scored and unscored questions, so treat every item as scoring.

What score do I need to pass?

You need 80% on the initial exam. The PGME portfolio is graded separately against a rubric, and its pass rate is not publicly disclosed.

Is the exam weighted by subject?

PGMS lists seven illustrative subjects but does not publish weights or identify a largest area. Prepare for all seven: chemicals and fertilizers, insects and disease, irrigation, management, soils, trees and shrubs, and turf grasses.

Can I use notes or a calculator during the test?

The public sources reviewed do not confirm open-book status, calculator rules, or whether the test is adaptive. Confirm all testing rules directly with PGMS and your approved proctor before exam day.

How long do I have to finish everything?

The initial testing window is 30 days, and the portfolio is due within one year. After certification, you renew every three years with 25 CEUs, at least 80% of them PGMS-approved.

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