C27 License - C-27 Landscaping Contractor License Landscape Maintenance and Repair Questions and Answers

Question 1

A client's lawn has several irregular brown patches where the turf feels spongy and lifts up easily, like a carpet. An increased number of birds have also been seen digging in these areas. What is the MOST likely cause of this damage?

Accepted Answer

An infestation of grub worms.

Answer

The combination of irregular brown patches, spongy turf that pulls away easily from the soil, and increased animal activity (birds, skunks, raccoons) are classic signs of a grub infestation. Grubs are beetle larvae that feed on grass roots, severing them from the soil and causing the grass to die.

Question 2

An entire irrigation system is experiencing low water pressure across all zones. The controller is functioning, and the water supply to the property is confirmed to be normal. Which of the following is the MOST logical first component to inspect for a system-wide pressure issue?

Accepted Answer

The backflow prevention device.

Answer

Since the low pressure affects all zones, the problem must be located at a point common to the entire system, before the water is diverted to individual zone valves. The backflow prevention device is a primary component that, if a valve is partially closed or the device is clogged, will restrict flow and reduce pressure for the whole system.

Question 3

When performing a 'rejuvenation pruning' on a severely overgrown, multi-stemmed deciduous shrub, what is the recommended practice?

Accepted Answer

Cut all stems down to about 6-12 inches from the ground in late winter or early spring.

Answer

Rejuvenation pruning is a hard pruning technique used to restore severely overgrown deciduous shrubs. The best practice is to cut all stems back to 6-12 inches above the ground during the dormant season (late winter/early spring). This drastic cut stimulates the well-established root system to produce vigorous new growth, effectively renewing the plant.

Question 4

A client's paver patio has a section that has sunken over time, creating an uneven and hazardous surface. What is the most common cause for this type of hardscape failure?

Accepted Answer

Inadequate compaction of the sub-base material.

Answer

The most frequent cause of sinking pavers is poor base preparation, specifically the failure to properly and adequately compact the sub-base material in layers. An improperly compacted base cannot support the load of the pavers and will settle over time, especially with exposure to water and traffic, leading to depressions.

Question 5

Which of the following is a core principle of Integrated Pest Management (IPM) that should be prioritized BEFORE considering chemical pesticides?

Accepted Answer

Utilizing cultural practices like proper plant selection and sanitation.

Answer

Integrated Pest Management (IPM) is an environmentally sensitive approach that prioritizes non-chemical methods first. A key principle is using cultural controls, such as selecting pest-resistant plants, practicing good sanitation (e.g., removing diseased leaves), and ensuring proper irrigation and fertilization to maintain plant health, making them less susceptible to pests.

C27 License - C-27 Landscaping Contractor License Practice Test

C27 License - C-27 Landscaping Contractor License Practice Test

C27 License - C-27 Landscaping Contractor License Landscape Maintenance and Repair Questions and Answers