CH Landscape Design and Installation 2

Question 1

Soil compaction during landscape installation is best prevented by:

Accepted Answer

Restricting heavy equipment to designated access routes and protecting root zones

Answer

Limiting equipment access to designated lanes and placing matting over root zones prevents compaction of soil pores, preserving aeration and drainage around plants.

Question 2

A landscape contractor following best management practices (BMPs) for erosion control on a new installation should first:

Accepted Answer

Install perimeter erosion controls (silt fencing, wattles) before grading begins

Answer

Perimeter erosion controls must be installed before any soil-disturbing activities to capture sediment before it can leave the site and enter waterways.

Question 3

When staking newly planted trees, current best practice recommends:

Accepted Answer

Staking only when necessary and removing stakes within 1 year

Answer

Trees should be staked only when they cannot stand alone, using flexible ties, and stakes should be removed within one growing season to allow trunk taper and strength to develop.

Question 4

Which landscape feature is most effective for managing stormwater runoff on residential properties?

Accepted Answer

Rain gardens (bioretention areas)

Answer

Rain gardens are shallow, planted depressions that capture and infiltrate stormwater runoff, reducing peak flow, filtering pollutants, and recharging groundwater.

Question 5

The purpose of a grading plan in landscape installation is to:

Accepted Answer

Define finished elevations and direct surface water drainage

Answer

A grading plan establishes finished grades, slopes, and drainage patterns to ensure water moves away from structures and toward appropriate drainage features.

CH - Certified Horticulturist Practice Test

CH - Certified Horticulturist Practice Test

CH Landscape Design and Installation 2