C27 License - C-27 Landscaping Contractor License Planting and Soil Management Questions and Answers

Question 1

A client has heavy clay soil and wants to plant a new tree. To ensure proper establishment and long-term health, what is the MOST appropriate backfilling technique?

Accepted Answer

Backfill the planting hole using only the native clay soil that was originally excavated.

Answer

Amend the backfill generously with sand and organic compost to create a rich, loamy mixture.

Answer

Dig the hole twice as deep as the root ball and fill the bottom half with gravel for drainage.

Answer

Replace all the native soil with a pre-mixed planter soil from a nursery.

Question 2

According to the California Model Water Efficient Landscape Ordinance (MWELO), when preparing a new landscape area of 1,000 square feet, what is the minimum amount of compost that should be incorporated into the soil?

Accepted Answer

4 cubic yards to a depth of 6 inches

Answer

1 cubic yard to a depth of 3 inches

Answer

2 cubic yards to a depth of 4 inches

Answer

6 cubic yards to a depth of 8 inches

Question 3

Which of the following is the PRIMARY reason for conducting a soil compaction test before beginning a hardscape installation?

Accepted Answer

To verify the soil's density and ability to support the structure without settling.

Answer

To determine the soil's pH and nutrient levels for future planting.

Answer

To identify the presence of beneficial microorganisms.

Answer

To ensure the soil has adequate organic matter content.

Question 4

When planting a container-grown shrub, the planting hole should be dug:

Accepted Answer

Two to three times wider than the root ball, but no deeper than the root ball.

Answer

To the exact same depth and width as the container.

Answer

Slightly deeper than the root ball to allow for soil settling.

Answer

At least six inches deeper and wider than the root ball on all sides.

Question 5

A landscape plan for a residential property in California calls for a new lawn. To comply with the Model Water Efficient Landscape Ordinance (MWELO) prescriptive approach, what is the maximum percentage of the total landscape area that can be dedicated to turf?

Accepted Answer

25%

Answer

50%

Answer

75%

Answer

10%

Question 6

What is the primary purpose of applying a 3-inch layer of organic mulch to all exposed soil surfaces in a newly planted landscape bed?

Accepted Answer

To retain soil moisture, suppress weeds, and regulate soil temperature.

Answer

To provide a significant source of immediate nutrients to the plants.

Answer

To prevent all insect activity in the garden bed.

Answer

To increase the soil's pH level for acid-loving plants.

A client has heavy clay soil and wants to plant a new tree.To ensure proper establishment and long-term health, what is the MOST appropriate backfilling technique?

A client has heavy clay soil and wants to plant a new tree.
To ensure proper establishment and long-term health, what is the MOST appropriate backfilling technique?