- What You Are Actually Studying For
- Check Eligibility Before You Open a Book
- How the PGMS Application Exam Works
- The Seven Preparation Subjects
- Sequencing the Subjects Across Your Prep
- Blueprint Gaps You Should Plan Around
- Registration, Fees, and Exam-Day Logistics
- The PGME Portfolio Is a Separate Hurdle
- After You Pass: Renewal and Career Value
- Frequently Asked Questions
- The CGM is administered by the Professional Grounds Management Society (PGMS): a 75-question, 90-minute online exam requiring 80% to pass.
- Prepare across seven subjects: chemicals and fertilizers, insects and disease, irrigation, management, soils, trees and shrubs, and turf grasses.
- The PGME portfolio is graded separately from the exam; its nine categories are not exam domains.
- PGMS publishes no weighted blueprint, so study all seven subjects evenly rather than betting on one.
What You Are Actually Studying For
Certified Grounds Manager is the professional credential offered through the Professional Grounds Management Society. It is built for people who run grounds operations at campuses, corporate properties, municipalities, hospitals, and similar facilities, and it signals that you can manage both the horticultural and the administrative sides of that work. If you are still sorting out the basics, the explainers on what CGM certification is and what CGM is cover the background. This guide assumes you have decided to go for it and want a plan.
The first thing to understand is that the credential has two parts. You sit a proctored online application exam, and you also complete a PGME portfolio with mentorship and evidence submission. Many candidates over-focus on one and get surprised by the other. This guide gives most of its attention to the exam, because that is what "passing on your first attempt" refers to, but it also explains how the portfolio fits so your timeline does not collapse.
Check Eligibility Before You Open a Book
Studying is wasted effort if you cannot yet apply. PGMS ties eligibility to a combination of education and hands-on experience, and you must also have at least one year at your current facility. The three pathways work like this:
| Education Level | Grounds Experience | Supervisory Experience |
|---|---|---|
| Relevant four-year degree | Four years | Two years |
| Two-year degree | Six years | Three years |
| No qualifying degree | Eight years | Four years |
In every pathway, the supervisory years are part of your total grounds experience requirement, not an add-on. Verify your own situation against the official handbook, and see the full breakdown in our CGM requirements guide. If you are a year or two short, use that gap productively: seek out supervisory responsibilities, document your projects, and start collecting the kinds of evidence the portfolio will later demand.
How the PGMS Application Exam Works
The initial exam is a 75-question test delivered online with an approved proctor. You have 90 minutes, and questions are a mix of multiple-choice and true/false. The passing standard is 80%, which at 75 questions means you need to be right on the large majority of items with limited room for gaps. PGMS does not publish how the 75 questions divide between scored and unscored items, so you should treat every question as if it counts.
Two format realities shape how you should prepare:
- Ninety minutes for 75 questions works out to roughly 72 seconds per item. That is comfortable for recall questions and tight for anything requiring a calculation or a multi-step scenario, so practice reading carefully and deciding quickly.
- Multiple-choice and true/false rewards precise knowledge. True/false items punish half-remembered rules, especially around chemical handling, application timing, and pest identification.
The materials reviewed do not establish whether the exam is open-book, and rules about calculators, adaptive delivery, or taking the test from home are unverified. Do not assume any of them. Confirm directly with PGMS and your proctor before exam day. For a candid look at how this format feels in practice, read how hard the CGM exam is, and for scoring specifics see the CGM passing score breakdown.
The Seven Preparation Subjects
The PGMS handbook lists seven illustrative subjects for the application exam. These are best understood as unweighted preparation headings. They are not an exhaustive list of everything that can appear, and PGMS does not publish percentage weights for them. Our complete guide to the seven content areas goes deeper on each; here is how to think about them as a candidate.
Chemical and Fertilizers
Expect questions on safe, legal, and effective use of products on managed landscapes.
- Reading and interpreting product labels and the logic behind application rates
- Fertilizer analysis, nutrient roles, and timing relative to plant growth
- Safe storage, handling, and application practices
- Matching a product to a problem instead of defaulting to a habit
Insects and Disease
This subject tests diagnosis as much as treatment.
- Distinguishing insect damage, disease symptoms, and cultural or environmental stress
- Understanding life cycles well enough to time interventions
- Integrated approaches that weigh monitoring, thresholds, and control options
- Recognizing problems across both turf and ornamental plantings
Irrigation
Water management is a recurring operational and budget issue for facility managers.
- System components and how they fit together
- Scheduling logic and matching water delivery to plant and soil needs
- Efficiency, troubleshooting, and conservation practices
- Recognizing common design or maintenance failures
Management
This is where a grounds manager's job differs from a skilled crew member's job.
- Budgeting, scheduling, and resource allocation
- Staff supervision, training, and safety culture
- Planning, record-keeping, and communicating with stakeholders
- Equipment and contractor decisions
Soils
Soil knowledge underpins nearly every other subject on the list.
- Soil texture, structure, and how they affect drainage and root growth
- pH and nutrient availability
- Compaction, amendments, and testing
- How soil conditions drive fertilizer and irrigation choices
Trees and Shrubs
Woody plant care combines horticulture with risk and long-term planning.
- Selection, planting, and establishment practices
- Pruning principles and timing
- Recognizing health problems and site-related stress
- Maintaining mature plantings over the long term
Turf Grasses
Turf is the most visible product of a grounds program.
- Cool-season versus warm-season grasses and where each belongs
- Mowing, aeration, overseeding, and renovation practices
- Weed, pest, and disease pressure specific to turf
- Aligning cultural practices with seasonal growth patterns
Sequencing the Subjects Across Your Prep
This is the one place where study scheduling matters, and it should follow the logic of how the subjects depend on each other rather than a generic calendar. Soils underpin chemicals, irrigation, turf, and woody plants, so start there. Management is the subject practitioners most often underestimate because it feels like common sense, but its questions are specific about process, so give it dedicated time rather than treating it as filler. A six-week arrangement works well for most working professionals:
Soils
- Texture, structure, pH, and nutrient availability
- Note which later subjects each concept feeds into
Turf Grasses and Irrigation
- Grass types and seasonal practices
- Water delivery, scheduling, and system troubleshooting
Chemical and Fertilizers
- Labels, rates, nutrient roles, and safety
- Tie each product category back to soil conditions
Insects and Disease, plus Trees and Shrubs
- Diagnosis and timing of interventions
- Woody plant selection, pruning, and care
Management
- Budgeting, supervision, planning, and safety
- Scenario-style practice questions
Full review
- Timed 75-question practice sets under 90 minutes
- Revisit your weakest subject twice
Adjust the order to your own background. A turf superintendent can compress Week 2 and spend more time on trees and management. A campus arborist should do the reverse. The point is that your schedule should reflect where your daily work leaves gaps, because the exam covers the whole range of a grounds program, not just the part you handle daily. When you are ready for timed practice, the CGM practice test is a good way to find out which subjects need another pass.
Blueprint Gaps You Should Plan Around
Serious candidates sometimes get frustrated by what PGMS does not publish, so it is worth being direct about it. There is no dated, current exam blueprint. The official handbook carries annotations from 2022, and the seven subjects above are illustrative rather than a complete weighted list. PGMS does not state which subject is largest, and the number of complete weighted exam domains is unknown. The practical consequences:
- Do not guess at weights. Any site claiming that a particular subject makes up a specific percentage of the exam is inventing a figure. Study all seven evenly until you have evidence otherwise from your own practice results.
- Expect some drift. Because the handbook annotations are dated and the listed subjects are illustrative, treat the handbook as a starting point and supplement it with your own field knowledge.
- Verify discrepancies. The materials reviewed even disagree on small details, such as the number of slides in a presentation component, with one page citing 150-200 and the handbook citing 125-200. When sources conflict, rely on the most recent official guidance and ask PGMS directly.
For a one-page recap of the facts that are safe to rely on, keep the CGM cheat sheet handy as a final-week reference.
Registration, Fees, and Exam-Day Logistics
The fee structure depends on your membership status with PGMS:
| Fee Type | Amount |
|---|---|
| PGMS member | $200 |
| Non-member | $300 |
| Join and apply (new membership plus application) | $400 |
| Retest | $50 |
Run the numbers before you choose a route. The gap between the member and non-member rates means that joining PGMS can make financial sense on its own, and the join-and-apply option bundles the two. A $50 retest is inexpensive, but the real cost of a failed attempt is time, since you may have a narrow window. Our certification cost breakdown lays out the full budget, including renewal.
Timing and proctoring
The initial testing window is 30 days, and the exam is taken online with an approved proctor. That means your first scheduling task is to line up the proctor early, not the night before your window closes. Confirm your technology setup, your identification requirements, and the proctor's availability well in advance. See CGM exam dates and scheduling for how the windows and deadlines fit together.
Pacing on the day
Aim to move through the first pass in roughly 60 to 65 minutes, flagging anything uncertain, then use the remaining time to revisit flagged items. Because true/false and multiple-choice questions carry no partial credit, never leave an item blank if the format allows an answer. Wording matters: watch for absolutes such as "always" and "never" in true/false statements, which in agronomy and plant care are rarely correct.
The PGME Portfolio Is a Separate Hurdle
Passing the exam does not finish the process. The PGME portfolio is graded separately using a rubric, and PGMS does not publicly disclose a pass rate for it. After the exam, you have up to one year to submit the portfolio, and the process includes mentorship and evidence submission. Understand that the portfolio has nine categories, but these are portfolio categories, not exam domains. Do not confuse the two lists when studying; the seven subjects above prepare you for the exam, while the portfolio is about documenting your professional practice.
Key Takeaway
Start collecting portfolio evidence while you study for the exam, not after. Project records, plans, photographs, budgets, and safety documentation you generate in your day job will be far easier to gather in real time than to reconstruct months later.
Because there is no published pass rate for the exam or the portfolio, be skeptical of any specific number you see quoted. Our analysis of what pass-rate data actually exists explains what can and cannot be said.
After You Pass: Renewal and Career Value
The credential is not permanent. You renew every three years by earning 25 continuing education units, with at least 80% of them PGMS-approved. The renewal fee is $75, reduced by $25 for each year of PGMS membership, so continuous membership meaningfully lowers the cost. Details are on the PGMS maintaining certification page. Build CEU collection into your normal professional development so renewal never becomes a scramble.
The credential is aimed at people who manage grounds at institutions and commercial properties, so the employers most likely to value it are universities, school districts, healthcare campuses, corporate and industrial properties, municipalities, and landscape management firms. For roles and trends, see CGM jobs. Compensation varies widely with region, employer, and responsibility, and no single figure should be trusted without context; the salary analysis and ROI discussion take a measured look at the question. For preparation resources, see CGM training.
Frequently Asked Questions
The initial application exam has 75 questions in multiple-choice and true/false formats, with 90 minutes to complete it. PGMS does not publish how many of those questions are scored versus unscored, so treat every item as counting toward your result.
You need 80% on the initial exam. The PGME portfolio is graded separately against a rubric, and its pass rate is not publicly disclosed. Passing one component does not substitute for the other.
PGMS does not publish subject weights or identify a largest domain. The handbook lists seven illustrative subjects as preparation headings, not a weighted blueprint, so the safest approach is to study all seven evenly and use practice results to find your weak spots.
A retest costs $50. Confirm the retest timing rules with PGMS, since the initial testing window is 30 days and you will want to schedule your proctor early to avoid losing time.
The reviewed public sources do not establish open-book status, and calculator, adaptive, and at-home rules are unverified. Ask PGMS and your approved proctor for the exact rules before exam day rather than assuming anything.
Every three years, with 25 CEUs, at least 80% of which must be PGMS-approved. The renewal fee is $75, less $25 for each year of PGMS membership.