QAC CATEGORY B – LANDSCAPE MAINTENANCE
LICENSE PRACTICE EXAM – QUESTIONS AND
ANSWERS | VERIFIED AND WELL DETAILED
ANSWERS | PLUS RATIONALES | GUARANTEED
PASS | LATEST EXAM UPDATE
CORE DOMAINS
1. Plant Identification and Selection
2. Soil Science and Nutrition Management
3. Irrigation Systems and Water Conservation
4. Pest and Disease Management (IPM)
5. Pruning and Plant Health Care
6. Turfgrass Management
7. Landscape Equipment Operation and Safety
8. Environmental Regulations and Compliance
9. Business Operations and Client Relations
10. Safety and OSHA Standards
INTRODUCTION
This comprehensive practice examination is designed to assess the knowledge, skills,
and professional judgment required for successful landscape maintenance
operations. The exam covers foundational plant science, practical maintenance
techniques, regulatory compliance, and ethical business practices. Candidates will
encounter multiple-choice questions that test both theoretical understanding and
real-world application. Scenario-based questions evaluate critical thinking and
decision-making abilities in complex landscape situations. This assessment
emphasizes sustainable practices, safety protocols, and professional standards
essential for responsible landscape management. Candidates are encouraged to
apply practical experience alongside technical knowledge when selecting responses.
,SECTION ONE: QUESTIONS 1 – 100
1. What is the primary purpose of applying a pre-emergent herbicide to
landscape beds?
A. To kill existing weeds actively growing in the bed
B. To prevent weed seeds from germinating
C. To provide nutrients to desired ornamental plants
D. To acidify the soil for acid-loving plants
🟢 B. To prevent weed seeds from germinating
🔴 Explanation: Pre-emergent herbicides work by creating a chemical barrier in
the soil that inhibits seed germination and root development. They are not
effective on actively growing weeds and do not provide nutrition or alter soil pH.
2. A landscape maintenance contractor notices yellowing between veins on
older leaves of a mature oak tree. This symptom most likely indicates which
nutrient deficiency?
A. Nitrogen
B. Iron
C. Magnesium
D. Phosphorus
🟢 C. Magnesium
🔴 Explanation: Magnesium deficiency typically manifests as interveinal chlorosis
(yellowing between veins) on older leaves first, as magnesium is mobile within the
plant and moves to newer growth. Nitrogen deficiency causes uniform yellowing,
iron deficiency affects younger leaves, and phosphorus deficiency causes purplish
coloration.
3. Which irrigation system component is responsible for preventing backflow
contamination of the potable water supply?
A. Pressure regulator
B. Backflow prevention device
C. Flow control valve
D. Filter screen
🟢 B. Backflow prevention device
🔴 Explanation: Backflow prevention devices are required by law to prevent
contaminated irrigation water from siphoning back into the main water supply.
,Pressure regulators control water pressure, flow control valves regulate flow rate,
and filters remove debris.
4. A client requests that their lawn be mowed to 1 inch during the summer
months. What is the most appropriate professional response?
A. Agree to the request as the client is paying for the service
B. Explain that cool-season grasses should be mowed higher during summer
stress periods
C. Suggest mowing to 1 inch but apply extra fertilizer to compensate
D. Recommend scalping the lawn once and then maintaining at 1 inch
🟢 B. Explain that cool-season grasses should be mowed higher during summer
stress periods
🔴 Explanation: Professional landscape maintenance requires educating clients
about proper turf management. Mowing cool-season grasses too short during
summer heat causes stress, reduces root depth, and increases susceptibility to
weeds and disease. Recommended heights are typically 2.5 to 3.5 inches during
stress periods.
5. How often should a commercial landscape maintenance company typically
calibrate spray equipment?
A. Once per year
B. Every time the equipment is used
C. Every six months
D. Only when a problem is suspected
🟢 B. Every time the equipment is used
🔴 Explanation: Spray equipment should be calibrated before each use to ensure
accurate application rates and prevent over-application or under-application of
chemicals. Changes in temperature, humidity, and equipment wear can affect
output, making daily calibration essential for professional operations.
6. What is the proper depth for mulching around trees and shrubs to maximize
benefits while preventing problems?
A. 1 to 2 inches
B. 2 to 4 inches
C. 6 to 8 inches
D. 10 to 12 inches
🟢 B. 2 to 4 inches
, 🔴 Explanation: A mulch depth of 2 to 4 inches provides optimal benefits
including moisture retention, temperature moderation, and weed suppression
without causing problems. Depths exceeding 4 inches can create conditions for
root rot, harbor pests, and prevent oxygen exchange to roots.
7. Which of the following is an indicator of overwatering in a landscape?
A. Deep green leaf color
B. Rapid growth
C. Fungal growth and leaf spot diseases
D. Increased flower production
🟢 C. Fungal growth and leaf spot diseases
🔴 Explanation: Overwatering creates conditions favorable for fungal diseases by
maintaining prolonged leaf wetness and saturated soil. While plants may show
other symptoms, the presence of fungal issues is a key indicator of excessive
moisture. Deep green color and rapid growth may occur with proper watering,
and flower production is generally reduced by overwatering.
8. A landscape maintenance professional discovers a severe infestation of
Japanese beetles on client property. What is the most environmentally
responsible initial action?
A. Immediately apply a broad-spectrum insecticide
B. Remove infested plants and replace with resistant species
C. Hand-pick beetles and use pheromone traps while assessing treatment options
D. Apply a systemic insecticide to all plants on the property
🟢 C. Hand-pick beetles and use pheromone traps while assessing treatment
options
🔴 Explanation: Integrated Pest Management (IPM) principles dictate that the
least toxic control methods should be attempted first. Hand-picking and
pheromone traps provide immediate reduction while allowing time to assess the
extent of infestation and choose appropriate targeted treatments.
9. What is the correct technique for pruning a tree branch at the trunk?
A. Cut flush with the trunk
B. Cut at a 45-degree angle 6 inches from the trunk
C. Cut just outside the branch collar
D. Cut at the midpoint of the branch
🟢 C. Cut just outside the branch collar
LICENSE PRACTICE EXAM – QUESTIONS AND
ANSWERS | VERIFIED AND WELL DETAILED
ANSWERS | PLUS RATIONALES | GUARANTEED
PASS | LATEST EXAM UPDATE
CORE DOMAINS
1. Plant Identification and Selection
2. Soil Science and Nutrition Management
3. Irrigation Systems and Water Conservation
4. Pest and Disease Management (IPM)
5. Pruning and Plant Health Care
6. Turfgrass Management
7. Landscape Equipment Operation and Safety
8. Environmental Regulations and Compliance
9. Business Operations and Client Relations
10. Safety and OSHA Standards
INTRODUCTION
This comprehensive practice examination is designed to assess the knowledge, skills,
and professional judgment required for successful landscape maintenance
operations. The exam covers foundational plant science, practical maintenance
techniques, regulatory compliance, and ethical business practices. Candidates will
encounter multiple-choice questions that test both theoretical understanding and
real-world application. Scenario-based questions evaluate critical thinking and
decision-making abilities in complex landscape situations. This assessment
emphasizes sustainable practices, safety protocols, and professional standards
essential for responsible landscape management. Candidates are encouraged to
apply practical experience alongside technical knowledge when selecting responses.
,SECTION ONE: QUESTIONS 1 – 100
1. What is the primary purpose of applying a pre-emergent herbicide to
landscape beds?
A. To kill existing weeds actively growing in the bed
B. To prevent weed seeds from germinating
C. To provide nutrients to desired ornamental plants
D. To acidify the soil for acid-loving plants
🟢 B. To prevent weed seeds from germinating
🔴 Explanation: Pre-emergent herbicides work by creating a chemical barrier in
the soil that inhibits seed germination and root development. They are not
effective on actively growing weeds and do not provide nutrition or alter soil pH.
2. A landscape maintenance contractor notices yellowing between veins on
older leaves of a mature oak tree. This symptom most likely indicates which
nutrient deficiency?
A. Nitrogen
B. Iron
C. Magnesium
D. Phosphorus
🟢 C. Magnesium
🔴 Explanation: Magnesium deficiency typically manifests as interveinal chlorosis
(yellowing between veins) on older leaves first, as magnesium is mobile within the
plant and moves to newer growth. Nitrogen deficiency causes uniform yellowing,
iron deficiency affects younger leaves, and phosphorus deficiency causes purplish
coloration.
3. Which irrigation system component is responsible for preventing backflow
contamination of the potable water supply?
A. Pressure regulator
B. Backflow prevention device
C. Flow control valve
D. Filter screen
🟢 B. Backflow prevention device
🔴 Explanation: Backflow prevention devices are required by law to prevent
contaminated irrigation water from siphoning back into the main water supply.
,Pressure regulators control water pressure, flow control valves regulate flow rate,
and filters remove debris.
4. A client requests that their lawn be mowed to 1 inch during the summer
months. What is the most appropriate professional response?
A. Agree to the request as the client is paying for the service
B. Explain that cool-season grasses should be mowed higher during summer
stress periods
C. Suggest mowing to 1 inch but apply extra fertilizer to compensate
D. Recommend scalping the lawn once and then maintaining at 1 inch
🟢 B. Explain that cool-season grasses should be mowed higher during summer
stress periods
🔴 Explanation: Professional landscape maintenance requires educating clients
about proper turf management. Mowing cool-season grasses too short during
summer heat causes stress, reduces root depth, and increases susceptibility to
weeds and disease. Recommended heights are typically 2.5 to 3.5 inches during
stress periods.
5. How often should a commercial landscape maintenance company typically
calibrate spray equipment?
A. Once per year
B. Every time the equipment is used
C. Every six months
D. Only when a problem is suspected
🟢 B. Every time the equipment is used
🔴 Explanation: Spray equipment should be calibrated before each use to ensure
accurate application rates and prevent over-application or under-application of
chemicals. Changes in temperature, humidity, and equipment wear can affect
output, making daily calibration essential for professional operations.
6. What is the proper depth for mulching around trees and shrubs to maximize
benefits while preventing problems?
A. 1 to 2 inches
B. 2 to 4 inches
C. 6 to 8 inches
D. 10 to 12 inches
🟢 B. 2 to 4 inches
, 🔴 Explanation: A mulch depth of 2 to 4 inches provides optimal benefits
including moisture retention, temperature moderation, and weed suppression
without causing problems. Depths exceeding 4 inches can create conditions for
root rot, harbor pests, and prevent oxygen exchange to roots.
7. Which of the following is an indicator of overwatering in a landscape?
A. Deep green leaf color
B. Rapid growth
C. Fungal growth and leaf spot diseases
D. Increased flower production
🟢 C. Fungal growth and leaf spot diseases
🔴 Explanation: Overwatering creates conditions favorable for fungal diseases by
maintaining prolonged leaf wetness and saturated soil. While plants may show
other symptoms, the presence of fungal issues is a key indicator of excessive
moisture. Deep green color and rapid growth may occur with proper watering,
and flower production is generally reduced by overwatering.
8. A landscape maintenance professional discovers a severe infestation of
Japanese beetles on client property. What is the most environmentally
responsible initial action?
A. Immediately apply a broad-spectrum insecticide
B. Remove infested plants and replace with resistant species
C. Hand-pick beetles and use pheromone traps while assessing treatment options
D. Apply a systemic insecticide to all plants on the property
🟢 C. Hand-pick beetles and use pheromone traps while assessing treatment
options
🔴 Explanation: Integrated Pest Management (IPM) principles dictate that the
least toxic control methods should be attempted first. Hand-picking and
pheromone traps provide immediate reduction while allowing time to assess the
extent of infestation and choose appropriate targeted treatments.
9. What is the correct technique for pruning a tree branch at the trunk?
A. Cut flush with the trunk
B. Cut at a 45-degree angle 6 inches from the trunk
C. Cut just outside the branch collar
D. Cut at the midpoint of the branch
🟢 C. Cut just outside the branch collar
