Page 1 of 174
NALP Landscape Industry Certified Technician
Exam – 250 Practice Questions With Verified
Answers & Rationales LATEST UPDATE THIS
YEAR
NALP Landscape Industry Certified Technician Exam – 250 Practice Questions With Verified
Answers & Rationales
EXAM OVERVIEW
Category Details
Certifying Body National Association of Landscape Professionals (NALP)
Formerly Known
Certified Landscape Technician (CLT)
As
Softscape Installation, Hardscape Installation, Turf Maintenance,
Specialty Areas
Ornamental Maintenance, Irrigation
Multiple-choice, true/false, short answer, matching, heat map
Exam Format
(identifying areas on diagrams)
Exam
Written Exam + Hands-on Practical Stations
Components
Test Day Full-day event at designated test sites
Certification valid for 3 years; renewal requires continuing education or
Renewal
re-examination
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EXAM COVERAGE SUMMARY (Point Form)
• Soil Science & Amendments (15–20%) – Soil texture, structure, pH, Cation Exchange
Capacity (CEC), organic matter, nutrient testing, amending soils for plant health
• Plant Identification & Selection (10–15%) – Plant hardiness zones, plant morphology,
species identification, selecting appropriate plants for site conditions
• Irrigation Systems (15–20%) – Components, design, installation, maintenance, water
efficiency, drip irrigation, sprinkler types, troubleshooting, "cycle and soak" technique
• Hardscape Installation (10–15%) – Patios, retaining walls, walkways, stone/concrete
installation, base preparation, compaction requirements, saw-tooth edging profiles
• Softscape Installation (10–15%) – Planting techniques, backfilling, staking, mulching,
grading
• Turf Management (10–15%) – Mowing heights (1/3 rule), aeration, dethatching,
fertilization, overseeding, turfgrass species
• Pest & Disease Management (5–10%) – IPM principles, common pests (grubs), diseases
(fungal), environmental stress, control methods
• Safety, First Aid & OSHA (5–10%) – OSHA labeling, PPE requirements, safe lifting, SDS,
underground utility color codes
• Tools & Equipment (5–10%) – Hand tools, power equipment, maintenance, equipment
calibration
• Communication & Basic Math (5%) – Calculating square footage, job costing,
professional communication
SECTION 1: SOIL SCIENCE & AMENDMENTS (Questions 1–40)
1. What is the primary purpose of soil testing before planting in landscape installation?
A) To determine soil color
B) To measure the exact number of bacteria in the soil
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C) To analyze nutrient levels and pH
D) To calculate the slope of the property
Answer: C
Rationale: Soil testing provides accurate data on the soil's chemical and physical properties. This
analysis determines pH levels and essential nutrient availability (N-P-K), which informs the
choice of appropriate plants and soil amendments needed to correct imbalances.
2. Which soil component is primarily responsible for nutrient retention?
A) Sand
B) Silt
C) Clay
D) Gravel
Answer: C
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Rationale: Clay particles have a high surface area and negative charge (Cation Exchange
Capacity), allowing them to retain nutrients effectively. Sand and gravel have low CEC and poor
nutrient retention.
3. Which soil type offers the fastest drainage?
A) Clay
B) Silt
C) Loam
D) Sand
Answer: D
Rationale: Sandy soils consist of large, coarse particles with large pore spaces. This structure
allows water to percolate and drain away very quickly, making them poor at retaining moisture
but excellent for preventing waterlogging.
NALP Landscape Industry Certified Technician
Exam – 250 Practice Questions With Verified
Answers & Rationales LATEST UPDATE THIS
YEAR
NALP Landscape Industry Certified Technician Exam – 250 Practice Questions With Verified
Answers & Rationales
EXAM OVERVIEW
Category Details
Certifying Body National Association of Landscape Professionals (NALP)
Formerly Known
Certified Landscape Technician (CLT)
As
Softscape Installation, Hardscape Installation, Turf Maintenance,
Specialty Areas
Ornamental Maintenance, Irrigation
Multiple-choice, true/false, short answer, matching, heat map
Exam Format
(identifying areas on diagrams)
Exam
Written Exam + Hands-on Practical Stations
Components
Test Day Full-day event at designated test sites
Certification valid for 3 years; renewal requires continuing education or
Renewal
re-examination
,Page 2 of 174
EXAM COVERAGE SUMMARY (Point Form)
• Soil Science & Amendments (15–20%) – Soil texture, structure, pH, Cation Exchange
Capacity (CEC), organic matter, nutrient testing, amending soils for plant health
• Plant Identification & Selection (10–15%) – Plant hardiness zones, plant morphology,
species identification, selecting appropriate plants for site conditions
• Irrigation Systems (15–20%) – Components, design, installation, maintenance, water
efficiency, drip irrigation, sprinkler types, troubleshooting, "cycle and soak" technique
• Hardscape Installation (10–15%) – Patios, retaining walls, walkways, stone/concrete
installation, base preparation, compaction requirements, saw-tooth edging profiles
• Softscape Installation (10–15%) – Planting techniques, backfilling, staking, mulching,
grading
• Turf Management (10–15%) – Mowing heights (1/3 rule), aeration, dethatching,
fertilization, overseeding, turfgrass species
• Pest & Disease Management (5–10%) – IPM principles, common pests (grubs), diseases
(fungal), environmental stress, control methods
• Safety, First Aid & OSHA (5–10%) – OSHA labeling, PPE requirements, safe lifting, SDS,
underground utility color codes
• Tools & Equipment (5–10%) – Hand tools, power equipment, maintenance, equipment
calibration
• Communication & Basic Math (5%) – Calculating square footage, job costing,
professional communication
SECTION 1: SOIL SCIENCE & AMENDMENTS (Questions 1–40)
1. What is the primary purpose of soil testing before planting in landscape installation?
A) To determine soil color
B) To measure the exact number of bacteria in the soil
,Page 3 of 174
C) To analyze nutrient levels and pH
D) To calculate the slope of the property
Answer: C
Rationale: Soil testing provides accurate data on the soil's chemical and physical properties. This
analysis determines pH levels and essential nutrient availability (N-P-K), which informs the
choice of appropriate plants and soil amendments needed to correct imbalances.
2. Which soil component is primarily responsible for nutrient retention?
A) Sand
B) Silt
C) Clay
D) Gravel
Answer: C
, Page 4 of 174
Rationale: Clay particles have a high surface area and negative charge (Cation Exchange
Capacity), allowing them to retain nutrients effectively. Sand and gravel have low CEC and poor
nutrient retention.
3. Which soil type offers the fastest drainage?
A) Clay
B) Silt
C) Loam
D) Sand
Answer: D
Rationale: Sandy soils consist of large, coarse particles with large pore spaces. This structure
allows water to percolate and drain away very quickly, making them poor at retaining moisture
but excellent for preventing waterlogging.
