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Red Seal Landscape Horticulturist study materials
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Red Seal Landscape Horticulturist practice questions

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Question 1Occupational Skills and Safety

Under WHMIS, which document must be readily available to workers for every hazardous product in the workplace and must follow a specific 16-section format?

  1. The supplier label
  2. The incident report
  3. The safety data sheet Correct answer.
  4. The workplace label

Explanation

WHMIS requires a safety data sheet (SDS) for each hazardous product, and it must follow a standardized 16-section format so information is consistent across suppliers. Workers must be able to access the SDS readily while on shift. Labels and training are also required, but the SDS is the document with the mandated section structure.

Question 2Occupational Skills and Safety

A crew is hand-digging planting holes in an area where a utility locate has not been completed. What is the correct safety practice?

  1. Dig only with a hand trowel to avoid damaging utility lines
  2. Proceed carefully and stop if any buried cable is felt
  3. Call the free locate service and wait for the area to be marked before digging Correct answer.
  4. Ask the client to confirm verbally that no services run through the bed

Explanation

Before any excavation, including planting holes and trenching for irrigation or edging, the free utility locate service must be contacted and the site marked. Underground electrical, gas, and communication lines can be struck by hand tools as well as machines. Verbal assurances or cautious digging do not replace a documented locate.

Question 3Occupational Skills and Safety

Which practice best prevents the formation of a mushroom-shaped flare at the base of a planted tree?

  1. Amending the backfill heavily with compost
  2. Staking the tree tightly for the first two seasons
  3. Watering deeply once a week during the growing season
  4. Setting the root flare at or slightly above grade and removing excess soil over the roots Correct answer.

Explanation

A trunk flare develops when the root collar is buried too deep, allowing adventitious roots to girdle the trunk. Planting with the root flare visible at or slightly above grade and clearing soil from the top of the root ball prevents this. Staking, amending, and watering are unrelated to root-collar depth.

Question 4Occupational Skills and Safety

When pruning a large limb from a tree, why is the three-cut method used instead of a single flush cut?

  1. It removes more live tissue to reduce regrowth
  2. It speeds callus formation on the final wound
  3. It eliminates the need to treat the wound with dressing
  4. It prevents the bark from tearing down the trunk as the limb falls Correct answer.

Explanation

The three-cut method uses an undercut, a top cut farther out, and a final cut at the branch collar. The undercut prevents the falling limb from stripping a long strip of bark down the trunk. The method is about avoiding tearing, not accelerating callus or reducing regrowth.

Question 5Occupational Skills and Safety

Which condition indicates that a deciduous shrub should be pruned in late winter rather than in midsummer?

  1. The shrub is grown primarily for evergreen foliage
  2. The shrub is located in a shaded border
  3. The shrub flowers on new wood produced in the current season Correct answer.
  4. The shrub sets its flower buds on the previous year's growth

Explanation

Shrubs that bloom on new wood form buds on growth produced in the same season, so late-winter pruning before bud break encourages vigorous flowering shoots. Shrubs that bloom on old wood should be pruned after flowering to avoid removing the coming season's buds. Foliage use and shade do not determine the pruning window for flowering.

Question 6Occupational Skills and Safety

A worker is about to operate a gas-powered string trimmer for several hours in warm weather. Which combination best addresses carbon monoxide exposure risk?

  1. Run the equipment only in a well-ventilated area and never indoors or in a closed vehicle Correct answer.
  2. Wear a dust mask to filter engine exhaust
  3. Refuel only when the engine is hot to avoid spills
  4. Wear hearing protection and safety glasses

Explanation

Gas-powered equipment produces carbon monoxide, an odorless gas that can accumulate in enclosed or poorly ventilated spaces. The key control is to operate it outdoors or with adequate ventilation and never in a closed garage or vehicle. Hearing and eye protection address other hazards, and a dust mask does not filter carbon monoxide.

Question 7Occupational Skills and Safety

What is the primary purpose of a Personal Protective Equipment hazard assessment in a landscaping operation?

  1. To satisfy the client's insurance requirements
  2. To record employee discipline for unsafe acts
  3. To identify workplace hazards and determine the PPE required to control them Correct answer.
  4. To establish the crew's daily production targets

Explanation

A PPE hazard assessment is a documented process to identify hazards in the work and select the appropriate protective equipment for each task. It informs training and selection, such as eye, hearing, respiratory, or foot protection. It is not a disciplinary, insurance, or production tool.

Question 8Occupational Skills and Safety

A crew is using a skid-steer loader to move soil on a slope. Which practice best reduces the risk of a rollover?

  1. Keep the bucket raised high to improve visibility
  2. Load the bucket to maximum capacity to improve traction
  3. Travel straight up and down the slope with the heavy end uphill Correct answer.
  4. Travel across the slope at a moderate speed

Explanation

On slopes, skid-steer loaders are most stable when operated straight up and down rather than across the face. Keeping the heavy end uphill improves stability. Raising the bucket, traveling across the slope, or overloading all reduce stability and increase rollover risk.

Question 9Occupational Skills and Safety

Which statement correctly describes the role of the branch collar when making a final pruning cut?

  1. The cut is made just outside the collar so the tree's natural barrier zone can close the wound Correct answer.
  2. The collar marks the point where the branch should be cut in half
  3. The collar is removed to leave a flush cut against the trunk
  4. The collar is a dead stub that should be left permanently

Explanation

The branch collar is the swollen tissue at the base of a branch containing the tree's natural defense zone. Cutting just outside the collar preserves that tissue and allows the tree to seal the wound. Flush cuts remove the collar and create a larger wound that closes poorly.

Question 10Occupational Skills and Safety

Which soil-handling practice best protects a client's existing tree roots during a major landscape renovation?

  1. Grade soil up over the root zone to improve the lawn
  2. Compact the soil to create a stable path for equipment
  3. Establish a tree protection zone with fencing around the critical root zone Correct answer.
  4. Remove surface roots within the drip line to simplify planting

Explanation

A fenced tree protection zone keeps equipment, materials, and foot traffic off the critical root zone, preventing compaction and root damage. Raising grade over roots, compacting soil, and cutting surface roots all harm trees. Fencing is a widely used and defensible protection measure.

Question 11Occupational Skills and Safety

What is the correct interpretation of a pesticide label statement that reads 'Do not apply within 30 days of harvest'?

  1. The product may be applied at any time if the crop is washed before harvest
  2. The interval applies only to ornamental plants
  3. The last permitted application must occur at least 30 days before the crop is harvested Correct answer.
  4. The product may be applied only after 30 days of crop growth

Explanation

This statement is a pre-harvest interval, meaning the final application must be made no later than 30 days before harvest so residues decline to permitted levels. The label is legally binding, so the interval must be observed. Washing, growth stage, and plant type do not override the stated interval.

Question 12Occupational Skills and Safety

Which practice is appropriate for safe handling of a concentrated pesticide during mixing?

  1. Measure concentrate at eye level to check the volume
  2. Mix the concentrate in an open bucket near a storm drain
  3. Wear the label-specified PPE and mix in a well-ventilated area away from water sources Correct answer.
  4. Store the mixed solution in an unlabeled drink container for later use

Explanation

The label specifies the PPE required for mixing and handling the concentrate, which is typically more hazardous than the diluted spray. Mixing should occur in a ventilated area away from drains and surface water to prevent contamination. Containers must remain labeled, and measuring at eye level risks splashes.

Question 13Occupational Skills and Safety

A crew must remove a mature tree that leans toward a residence. Which approach reflects accepted arboriculture safety practice?

  1. Use a controlled felling plan with rigging or sectional removal by a qualified arborist Correct answer.
  2. Rely on a rope tied to a truck to pull the tree away from the house
  3. Have the least experienced climber make the felling cuts to build skill
  4. Cut the hinge wood completely so the tree falls freely

Explanation

Trees with targets such as a residence require a planned removal, often by sectional rigging or controlled felling performed by qualified personnel. The hinge must be preserved to control the direction of fall, and improvised pulling with a vehicle is unsafe. Assigning the task to inexperienced workers increases risk.

Question 14Occupational Skills and Safety

Which combination correctly matches a hazard with its control in a landscape maintenance setting?

  1. Heat stress controlled by wearing heavier clothing
  2. Noise from backpack blowers controlled by job rotation alone
  3. Vibration from equipment controlled by increasing engine speed
  4. Slips on wet pavement controlled by prompt cleanup and non-slip footwear Correct answer.

Explanation

Wet pavement is controlled by removing the hazard through prompt cleanup and by using footwear with slip-resistant soles. Noise, heat, and vibration require controls matched to the hazard, such as hearing protection, hydration and rest breaks, and limits on exposure time. The matched pair must actually reduce the risk.

Question 15Occupational Skills and Safety

Which statement about the hierarchy of controls is correct for a landscape crew facing a silica dust hazard from cutting concrete pavers?

  1. Training workers to hold their breath is an acceptable control
  2. Administrative controls such as shorter shifts eliminate the hazard
  3. Respiratory protection is the most effective control and should be used first
  4. Wet cutting or dust collection is preferred because it controls dust at the source Correct answer.

Explanation

The hierarchy of controls ranks elimination and engineering controls above administrative controls and PPE. Wet cutting or dust collection is an engineering control that reduces airborne silica at the source. Respiratory protection is a last line of defense, and administrative measures reduce exposure time but do not eliminate the hazard.

Question 16Occupational Skills and Safety

Which action is required before a worker enters a confined space such as a below-grade irrigation vault on a landscape site?

  1. Prop the access cover open and proceed without further checks
  2. Enter quickly and complete the task before air quality changes
  3. Test the atmosphere, isolate hazards, and follow the site's confined space entry procedure Correct answer.
  4. Send one worker in first to check if the air smells safe

Explanation

Confined spaces can contain oxygen-deficient or toxic atmospheres that are not detectable by smell. Entry requires atmospheric testing, hazard isolation, and adherence to the site's entry procedure with appropriate rescue provisions. Smell, speed, and propping a cover do not make entry safe.

Question 17Tools and Equipment

Before starting a chainsaw on a landscaping job, which check is the most important for reducing kickback risk?

  1. Confirm the chain brake engages and the chain is properly tensioned Correct answer.
  2. Verify the bar oil reservoir cap is painted orange
  3. Check that the fuel tank is filled to the top
  4. Make sure the saw is resting on the ground

Explanation

Kickback control depends on a functioning chain brake and correct chain tension, both of which should be verified before every start-up. A loose chain can derail or break, and a disabled brake removes the operator's main safety response to kickback. Fuel level and cap colour do not affect kickback risk.

Question 18Tools and Equipment

A landscape crew needs to cut clean trenches for edging beds along a curved border. Which tool is the most appropriate choice?

  1. A bow rake
  2. A half-moon edger Correct answer.
  3. A garden fork
  4. A spade with a sharpened straight edge

Explanation

A half-moon edger has a curved, sharpened blade designed to slice a clean edge along curves in turf and soil. A spade is better for digging and lifting, a fork loosens soil, and a rake levels or gathers material. The half-moon shape follows the curve and produces a crisp trench line.

Question 19Tools and Equipment

Which piece of personal protective equipment is specifically required when operating a string trimmer with a metal blade?

  1. A dust mask
  2. Safety glasses only
  3. Hearing protection only
  4. Face shield and chaps Correct answer.

Explanation

Metal-blade trimmers can throw debris and cut into the operator's legs, so a face shield and leg protection such as chaps are required. Hearing protection and safety glasses are also needed but do not address the cutting and debris hazards. A dust mask is not the primary control for this tool.

Question 20Tools and Equipment

What is the correct procedure for storing a gas-powered hedge trimmer at the end of the season?

  1. Leave fuel in the tank and store it upright in a shed
  2. Drain the fuel tank and run the engine until it stops Correct answer.
  3. Top up the tank with fresh fuel and seal the vent
  4. Remove the spark plug and leave the tank full

Explanation

Fuel left in a carburettor over long storage can gum up and cause starting problems the next season. Draining the tank and running the engine until it stops clears residual fuel from the carburettor. Storing it with a full tank or removing the plug does not prevent varnish buildup.

Question 21Tools and Equipment

A worker is about to use a new two-stroke backpack blower. What fuel mixture is normally required?

  1. A mix of gasoline and two-stroke oil at the ratio specified by the manufacturer Correct answer.
  2. Straight gasoline with no oil
  3. Diesel fuel with a lubricity additive
  4. A mix of gasoline and four-stroke motor oil at any ratio

Explanation

Two-stroke engines have no separate oil sump and rely on oil mixed into the fuel for lubrication. The manufacturer's specified ratio, commonly around 50:1, must be followed to avoid seizure or excessive carbon. Straight gasoline, diesel, and four-stroke oil are all unsuitable.

Question 22Tools and Equipment

A crew is installing a small irrigation line in a residential lawn and needs to cut a narrow trench through turf with minimal surface disturbance. Which tool best matches the task?

  1. A turf cutter with a vibrating blade
  2. A trencher with a carbide-toothed chain Correct answer.
  3. A rotary tiller
  4. A walk-behind edger

Explanation

A trencher with a narrow chain cuts a controlled trench for pipe while limiting turf damage. A turf cutter lifts sod, an edger cuts a border line, and a tiller disturbs a wide band of soil. Matching the tool to the narrow-trench task reduces restoration work.

Question 23Tools and Equipment

A chainsaw chain is tensioned correctly when the chain can be pulled away from the bar by roughly what amount at mid-bar?

  1. It cannot be moved at all
  2. It can be pulled about 3 to 5 mm with a cold bar Correct answer.
  3. It hangs loosely below the bar by 20 mm
  4. It can be lifted so the drive links clear the bar groove

Explanation

Correct tension allows a small lift of a few millimetres at mid-bar when the chain is cold, enough to keep the chain seated without binding. A chain that cannot move will overheat and stretch, while a very loose chain can derail. Tension should be rechecked after the saw warms up.

Question 24Tools and Equipment

During a pruning job, the bypass blades on a pair of loppers begin to cross and tear bark instead of cutting cleanly. What is the most likely cause?

  1. The blade bevel is too sharp
  2. The sap groove is clogged with sawdust
  3. The pivot is loose or the blade has been bent Correct answer.
  4. The handles are too long for the cut

Explanation

Bypass loppers cut cleanly only when the moving blade passes the hook without contact. A loose pivot or bent blade lets the cutting edge cross the hook, crushing and tearing bark. Sharpening or cleaning will not correct a misalignment.

Question 25Tools and Equipment

Why should a pruning saw be cleaned and disinfected between cuts when removing diseased branches?

  1. To keep the saw teeth from rusting in storage
  2. To improve the saw's cutting speed
  3. To prevent transferring pathogens to healthy tissue Correct answer.
  4. To remove sap that dulls the teeth

Explanation

Pathogens such as fungi and bacteria can be carried on saw blades from an infected branch to a healthy cut. Disinfecting between cuts, especially on valuable or susceptible plants, limits spread. Rust prevention, speed, and sap removal are maintenance concerns, not the reason for disinfecting.

Question 26Tools and Equipment

A two-stroke string trimmer starts, runs briefly, then stalls when the throttle is opened. Which cause is most consistent with these symptoms?

  1. The cutting head line is too short
  2. The air filter is clean and the spark plug is new
  3. The fuel mixture is too rich or the carburettor is misadjusted Correct answer.
  4. The gearbox grease is low

Explanation

An engine that starts and then stalls when the throttle opens is often running too rich or has a carburettor adjustment problem, causing it to flood or bog. A clean filter and new plug rule out those common faults. Line length and gearbox grease do not affect engine fuelling.

Question 27Tools and Equipment

Which practice best extends the service life of a good-quality pair of bypass pruners?

  1. Oil the pivot and clean sap from the blades after each use Correct answer.
  2. Store them with the blades closed tightly to protect the edge
  3. Use them to cut roots in soil
  4. Sharpen the blades with a file every day

Explanation

Cleaning sap and oiling the pivot after use prevents corrosion and keeps the action smooth. Daily filing removes metal unnecessarily, storing blades tightly closed can trap moisture and dull edges, and cutting roots in soil rapidly wears and chips the edge. Routine light maintenance gives the longest life.

Question 28Tools and Equipment

A landscape crew must remove a large shrub with a trunk diameter of about 100 mm. Which tool combination is most suitable for severing the roots and trunk?

  1. A lopper and a weeding fork
  2. A pruning saw and bypass pruners
  3. A mattock and a bow saw Correct answer.
  4. A hedge shears and a hand trowel

Explanation

A mattock provides the leverage to sever and lift thick roots, while a bow saw cuts the woody trunk. Bypass pruners, loppers, and shears are sized for smaller branches, and a trowel or weeding fork cannot handle a 100 mm trunk. Matching tool size to the material prevents damage and injury.

Question 29Tools and Equipment

What is the main reason a landscape crew uses a calibrated backpack sprayer rather than a watering can for applying herbicide to a lawn edge?

  1. It does not require cleaning between products
  2. It is lighter to carry over long distances
  3. It holds more water than a watering can
  4. It applies a measured, uniform dose at a controlled rate Correct answer.

Explanation

A calibrated sprayer delivers a known volume per area, so the herbicide dose is accurate and uniform, reducing the risk of under- or over-application. Capacity and weight are secondary considerations, and sprayers must always be cleaned between products to avoid cross-contamination.

Question 30Tools and Equipment

A rotary mower leaves an uneven cut and the engine labours in tall grass. Which combination of checks best addresses the cause?

  1. Check the blade for dullness or bend and set the deck height higher Correct answer.
  2. Check the oil level and the battery charge
  3. Check the spark plug gap and the fuel filter
  4. Check the tyre pressure and the air filter only

Explanation

An uneven cut with a labouring engine in tall grass points to a dull or bent blade and a deck set too low, which overloads the engine. Raising the deck and servicing the blade restore an even cut and reduce load. Ignition, fuel, and tyre checks do not address the cutting symptoms described.

Question 31Tools and Equipment

A crew is comparing a walk-behind aerator with a tow-behind spike aerator for relieving compaction on a heavily used lawn. Which statement best explains the choice?

  1. Core aerators remove soil plugs and are more effective at relieving compaction Correct answer.
  2. Spike aerators are always better because they leave no mess
  3. Both types relieve compaction equally, so cost is the only factor
  4. Spike aerators remove cores and are preferred on heavy clay

Explanation

Core aerators pull soil plugs from the ground, opening channels that relieve compaction and improve air and water movement. Spike aerators push soil aside and can actually increase compaction under heavy use. The choice should be based on the compaction problem, not on mess or cost alone.

Question 32Tools and Equipment

A crew is setting up a gas-powered auger to plant trees in a lawn. Which practice best reduces the risk of injury and equipment damage?

  1. Engage the auger with the engine at full throttle and let it bite quickly
  2. Hold the auger loosely so it can find its own path
  3. Run the auger at full depth before checking for buried services
  4. Start the hole with the auger centred and lower it slowly at low throttle Correct answer.

Explanation

Starting the hole centred and lowering the auger slowly at low throttle keeps control and prevents the bit from grabbing and kicking. Full-throttle engagement and loose grip increase the chance of the auger torqueing the operator. Buried services must be located before any digging begins.

Question 33Site Assessment and Planning

During a site assessment, a landscape horticulturist needs to confirm the legal boundary of a residential property before designing a fence line. Which document provides the most reliable evidence of the property limits?

  1. A recent satellite image of the neighbourhood
  2. A municipal zoning map showing the lot fabric
  3. A survey plan prepared by a licensed land surveyor Correct answer.
  4. The homeowner's sketch of the yard

Explanation

A survey plan prepared and stamped by a licensed land surveyor is the legal record of boundary locations, dimensions and registered encumbrances such as easements. Zoning maps, imagery and homeowner sketches are useful context but carry no legal authority for boundary placement.

Question 34Site Assessment and Planning

A planting bed is proposed next to a house wall. Which action best determines whether utility services run through the proposed excavation area?

  1. Reviewing the municipal zoning bylaw for setbacks
  2. Requesting a locate of buried services from the regional notification service Correct answer.
  3. Checking the depth of the local water table
  4. Measuring the slope of the adjacent lawn

Explanation

Buried gas, electrical, telecommunications and water lines must be located through the regional one-call notification service before any digging. This step protects workers and prevents service damage and is a legal requirement in most jurisdictions.

Question 35Site Assessment and Planning

A client wants a shade-tolerant groundcover planted beneath a mature spruce. Before selecting species, the horticulturist inspects the soil at the site. Which condition is most likely to limit plant establishment under the canopy?

  1. Compacted, dry soil with a thick acidic duff layer Correct answer.
  2. Friable sandy loam with neutral pH
  3. Well-aggregated soil with moderate organic matter
  4. Loose loam with high earthworm activity

Explanation

Under conifer canopies, rainfall interception, root competition and accumulated acidic litter commonly produce dry, compacted soil with a thick duff layer that inhibits germination and rooting. The other described soils are favourable for establishment and would not be a limiting factor.

Question 36Site Assessment and Planning

A slope on a commercial site is measured as a 3:1 gradient. How should the horticulturist interpret this in terms of site planning?

  1. It rises three units vertically for every one unit horizontally, which is nearly vertical
  2. It represents a slope of three degrees from horizontal
  3. It represents a 3 percent grade that drains poorly
  4. It rises one unit vertically for every three units horizontally, which is steep for mowing and requires stabilization Correct answer.

Explanation

Slope ratios are expressed as vertical rise to horizontal run, so 3:1 means one metre of rise per three metres of run, roughly 33 percent or 18 degrees. Such slopes are difficult to maintain with standard mowers and typically need erosion control or terracing.

Question 37Site Assessment and Planning

A site plan shows a north arrow and a scale of 1:200. A proposed walkway measures 45 mm on the drawing. What is its real length?

  1. 9 metres Correct answer.
  2. 90 metres
  3. 4.5 metres
  4. 0.9 metres

Explanation

At a scale of 1:200, each drawing unit represents 200 units on the ground, so 45 mm multiplied by 200 equals 9000 mm, or 9 metres. Converting units before multiplying avoids order-of-magnitude errors.

Question 38Site Assessment and Planning

A horticulturist is assessing a site for a rain garden. Which combination of site conditions is most suitable for infiltration-based stormwater treatment?

  1. Heavy clay with a seasonally high water table near the basement
  2. Compacted fill over an old fuel tank pad
  3. Permeable native soil, a gentle depression, and a safe distance from foundations Correct answer.
  4. Bedrock at the surface with steep cross-slope

Explanation

Rain gardens require soils that infiltrate at a reasonable rate, a shallow depression to pond runoff, and adequate separation from building foundations to protect basements. Clay with a high water table, shallow bedrock and contaminated fill all prevent safe infiltration.

Question 39Site Assessment and Planning

A client's site receives strong prevailing winter winds from the northwest. Which planning response best reduces wind exposure for a proposed outdoor seating area?

  1. Building a solid impermeable wall directly against the seating
  2. Removing all vegetation to eliminate turbulence
  3. Planting an evergreen shelterbelt on the windward side with a permeable density Correct answer.
  4. Placing the seating on the highest point of the property

Explanation

A semi-permeable evergreen shelterbelt on the windward side slows wind and creates a protected zone downwind without generating severe turbulence. Solid barriers and exposed high points tend to increase or redirect wind problems.

Question 40Site Assessment and Planning

An existing mature oak is to be retained during construction of a new patio. Which site protection measure best preserves the tree's root system?

  1. Parking equipment under the canopy to keep the work area compact
  2. Piling excavated soil against the trunk to save hauling costs
  3. Lowering the grade within the drip line to improve drainage
  4. Fencing a tree protection zone based on the drip line and avoiding grade changes within it Correct answer.

Explanation

Most fine roots lie within the drip line and just beyond, so fencing this zone and preventing grade change, compaction and stockpiling protects the tree. Soil against the trunk, equipment parking and grade lowering all cause root and trunk damage.

Question 41Site Assessment and Planning

A horticulturist evaluates a soil sample and finds a pH of 5.2 with a sandy texture. Which interpretation is most accurate for planning a vegetable bed?

  1. The soil is strongly acidic and low in nutrient-holding capacity, so lime and organic matter are likely needed Correct answer.
  2. The soil is alkaline and will lock up iron for acid-loving plants
  3. The soil is saline and unsuitable for any crop
  4. The soil is neutral and requires no amendment

Explanation

A pH of 5.2 is strongly acidic, and sandy soils have low cation exchange capacity, so nutrients leach readily and many vegetables underperform. Liming raises pH and organic matter improves water and nutrient retention.

Question 42Site Assessment and Planning

A developer requires a landscape plan to show existing drainage patterns. Which field observation most directly reveals where surface water flows across the site?

  1. Spot elevations taken with a level or total station Correct answer.
  2. The compass bearing of the street frontage
  3. The species list of the existing lawn
  4. A soil colour chart reading at one point

Explanation

Spot elevations at intervals reveal high and low points and therefore the direction of surface flow, allowing the designer to place swales and inlets. The other observations provide unrelated information that does not describe drainage.

Question 43Site Assessment and Planning

A property sits in a region mapped as a floodplain. Which planning consideration should the horticulturist raise with the client before finalizing a planting design?

  1. Floodplain regulations may restrict structures and require flood-tolerant species and erosion protection Correct answer.
  2. Floodplain mapping has no bearing on permits for hardscape
  3. Floodplain status only affects insurance and never the landscape design
  4. Flood-tolerant plants are unnecessary because flooding is always brief

Explanation

Floodplain regulations commonly limit structures, fill and hardscape and may require compensatory storage or permits. Plant selection should favour species tolerant of periodic inundation and soils that resist erosion during high water.

Question 44Site Assessment and Planning

A horticulturist is choosing a method to assess soil compaction on a site before planting street trees. Which tool or test gives a direct measure of compaction?

  1. A penetrometer or bulk density core sample Correct answer.
  2. A pH meter
  3. A light meter
  4. A soil colour chart

Explanation

A penetrometer measures resistance to penetration, and bulk density cores quantify compaction directly. Both reveal whether soil is too dense for root growth, whereas pH, light and colour tests measure unrelated properties.

Question 45Site Assessment and Planning

A client requests a low-maintenance landscape on a site with shallow bedrock and little topsoil. Which design approach is most appropriate?

  1. Select drought-tolerant, shallow-rooted species and use raised beds or imported soil pockets Correct answer.
  2. Grade the bedrock down to create deep planting pits
  3. Specify large shade trees requiring deep soil volumes
  4. Install an irrigation system and plant moisture-loving species

Explanation

Shallow bedrock limits rooting depth and water storage, so species adapted to thin, dry soils and raised beds that add soil volume are the practical choice. Deep-rooted trees, bedrock removal and moisture-demanding plants all conflict with the site.

Question 46Site Assessment and Planning

A landscape plan must respect a registered easement crossing the rear of a lot. What does this mean for the planting design?

  1. Plantings and structures within the easement must not obstruct the holder's access and may be removed Correct answer.
  2. The easement transfers ownership of the land to the utility
  3. The easement applies only to buildings and not to trees
  4. The easement prohibits any planting anywhere on the lot

Explanation

An easement grants a right of access or use without transferring ownership, so plantings within it must not block access and may be removed by the holder. Ownership stays with the landowner, and restrictions are limited to the easement area.

Question 47Site Assessment and Planning

A horticulturist is preparing a site inventory for a residential redesign. Which information is most important to record about existing trees?

  1. Species, trunk diameter, crown spread, condition and health status Correct answer.
  2. Only the number of trees
  3. Only the tree heights
  4. Only the leaf colour

Explanation

A useful tree inventory records species, diameter at breast height, crown spread, condition and health so the designer can decide what to retain and how to protect it. Height, colour or counts alone are insufficient for planning decisions.

Question 48Site Assessment and Planning

A horticulturist must determine the sun exposure of a proposed perennial border on the east side of a building in the northern hemisphere. Which statement best describes the expected light?

  1. It receives full afternoon sun and morning shade
  2. It receives morning sun and afternoon shade Correct answer.
  3. It receives no direct sun at any time of day
  4. It receives full sun all day in summer

Explanation

An east-facing border in the northern hemisphere catches the rising sun in the morning and falls into the building's shadow in the afternoon. This pattern suits plants that prefer morning light and protection from intense afternoon heat.

Question 49Site Assessment and Planning

A site has a seasonally high water table about 400 mm below the surface. Which planting strategy is most appropriate for a shrub border in that area?

  1. Compact the soil to reduce water movement
  2. Install subsoil drainage and plant desert species
  3. Plant species requiring sharp drainage at grade
  4. Choose species tolerant of periodic saturation and consider raised planting mounds Correct answer.

Explanation

A high water table saturates the root zone seasonally, so species tolerant of wet soils and raised mounds that lift roots above the water table are appropriate. Drainage-demanding species, desert plants and compaction all conflict with the site.

Question 50Site Assessment and Planning

A horticulturist is evaluating a site for a commercial landscape and finds that the existing topsoil has been stripped and the subsoil is highly compacted. Which remediation step is most important before planting?

  1. Planting immediately to stabilize the surface
  2. Decompacting the subsoil and importing or amending topsoil to the required depth Correct answer.
  3. Increasing the slope to shed water faster
  4. Applying herbicide to the bare subsoil

Explanation

Stripped, compacted subsoil restricts rooting and drainage, so the subsoil should be loosened and a suitable depth of topsoil provided before planting. Herbicide, added slope or immediate planting do not correct the underlying physical limitation.