North Carolina Landscape Contractor
Examination Practice Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
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1. Which soil amendment improves water retention and nutrient
availability in sandy soils?
a) Sand
b) Gravel
c) Organic compost
d) Perlite
Rationale: Organic compost increases soil fertility and water-holding
capacity, particularly in sandy soils.
2. What is the primary purpose of a landscape design plan?
a) To decorate the garden
, b) To provide a functional and aesthetic layout
c) To select plants randomly
d) To increase construction costs
Rationale: A landscape design plan ensures functionality, aesthetics,
and efficient use of space.
3. Which plant is considered a xeriscape-friendly species?
a) Fern
b) Bluegrass
c) Agave
d) Rice
Rationale: Agave is drought-tolerant and requires minimal irrigation,
suitable for xeriscaping.
4. When installing a retaining wall, what is the most critical factor for
stability?
a) Color of the wall
b) Wall height
c) Proper footing and drainage
d) Decorative finish
Rationale: Proper footing and drainage prevent soil pressure build-up
and wall failure.
5. What is the recommended depth for planting most trees in the
landscape?
a) Twice the root ball height
, b) Root flare at or slightly above soil grade
c) Entire root ball buried 6 inches deeper
d) 1 foot below soil grade
Rationale: Planting with the root flare at soil grade ensures proper
root development and tree health.
6. Which irrigation method is most water-efficient for shrub beds?
a) Overhead sprinklers
b) Flood irrigation
c) Drip irrigation
d) Hose-end sprinklers
Rationale: Drip irrigation delivers water directly to the root zone,
minimizing waste.
7. What is the main advantage of using native plants in landscaping?
a) Require more water
b) Attract pests
c) Adapted to local climate and soil
d) Slow growth
Rationale: Native plants are suited to local conditions, reducing
maintenance and water needs.
8. Which pruning technique encourages flowering in spring-blooming
shrubs?
a) Prune immediately after flowering
b) Prune in late winter
, c) Shear annually in summer
d) Remove all buds before winter
Rationale: Spring-flowering shrubs set buds in the previous season;
pruning right after flowering preserves buds.
9. What is the main purpose of mulching around plants?
a) Fertilize monthly
b) Reduce soil nutrients
c) Retain soil moisture and suppress weeds
d) Prevent photosynthesis
Rationale: Mulch conserves moisture, moderates soil temperature,
and reduces weed growth.
10. Which type of grass is best suited for North Carolina lawns in full
sun?
a) Kentucky bluegrass
b) Bermuda grass
c) Fescue in shade
d) Ryegrass in wet areas
Rationale: Bermuda grass thrives in warm climates and full sun
typical in North Carolina.
11. What is the standard slope for proper lawn drainage?
a) 0%
b) 2% away from structures
c) 5% toward buildings
Examination Practice Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. Which soil amendment improves water retention and nutrient
availability in sandy soils?
a) Sand
b) Gravel
c) Organic compost
d) Perlite
Rationale: Organic compost increases soil fertility and water-holding
capacity, particularly in sandy soils.
2. What is the primary purpose of a landscape design plan?
a) To decorate the garden
, b) To provide a functional and aesthetic layout
c) To select plants randomly
d) To increase construction costs
Rationale: A landscape design plan ensures functionality, aesthetics,
and efficient use of space.
3. Which plant is considered a xeriscape-friendly species?
a) Fern
b) Bluegrass
c) Agave
d) Rice
Rationale: Agave is drought-tolerant and requires minimal irrigation,
suitable for xeriscaping.
4. When installing a retaining wall, what is the most critical factor for
stability?
a) Color of the wall
b) Wall height
c) Proper footing and drainage
d) Decorative finish
Rationale: Proper footing and drainage prevent soil pressure build-up
and wall failure.
5. What is the recommended depth for planting most trees in the
landscape?
a) Twice the root ball height
, b) Root flare at or slightly above soil grade
c) Entire root ball buried 6 inches deeper
d) 1 foot below soil grade
Rationale: Planting with the root flare at soil grade ensures proper
root development and tree health.
6. Which irrigation method is most water-efficient for shrub beds?
a) Overhead sprinklers
b) Flood irrigation
c) Drip irrigation
d) Hose-end sprinklers
Rationale: Drip irrigation delivers water directly to the root zone,
minimizing waste.
7. What is the main advantage of using native plants in landscaping?
a) Require more water
b) Attract pests
c) Adapted to local climate and soil
d) Slow growth
Rationale: Native plants are suited to local conditions, reducing
maintenance and water needs.
8. Which pruning technique encourages flowering in spring-blooming
shrubs?
a) Prune immediately after flowering
b) Prune in late winter
, c) Shear annually in summer
d) Remove all buds before winter
Rationale: Spring-flowering shrubs set buds in the previous season;
pruning right after flowering preserves buds.
9. What is the main purpose of mulching around plants?
a) Fertilize monthly
b) Reduce soil nutrients
c) Retain soil moisture and suppress weeds
d) Prevent photosynthesis
Rationale: Mulch conserves moisture, moderates soil temperature,
and reduces weed growth.
10. Which type of grass is best suited for North Carolina lawns in full
sun?
a) Kentucky bluegrass
b) Bermuda grass
c) Fescue in shade
d) Ryegrass in wet areas
Rationale: Bermuda grass thrives in warm climates and full sun
typical in North Carolina.
11. What is the standard slope for proper lawn drainage?
a) 0%
b) 2% away from structures
c) 5% toward buildings
