Landscape Design Landscape Maintenance and Management

Question 1

What is integrated pest management (IPM) in landscape maintenance?

Accepted Answer

A systematic approach using multiple strategies to control pests with minimal pesticide use

Answer

Applying pesticides on a fixed schedule regardless of pest presence

Answer

Using only organic pesticides in the landscape

Answer

Eliminating all pests through intensive spraying

Question 2

What is the recommended mulch depth for most landscape planting beds?

Accepted Answer

2 to 4 inches

Answer

6 to 8 inches

Answer

Less than 1 inch

Answer

10 inches or more

Question 3

What is volcano mulching and why is it harmful to trees?

Accepted Answer

Piling mulch against the trunk in a cone shape, causing rot and pest damage

Answer

Applying mulch too thinly to be effective

Answer

Mulching on a steep slope that erodes

Answer

Using hot composted mulch that burns roots

Question 4

What is the best time to apply pre-emergent herbicide for crabgrass control in US lawns?

Accepted Answer

Early spring before soil temperature reaches 55 degrees F

Answer

Late fall after first frost

Answer

Midsummer during peak growth

Answer

After crabgrass has germinated

Question 5

Which fertilization timing is generally recommended for cool-season turfgrasses like fescue in the US?

Accepted Answer

Fall (September through November) as the primary application

Answer

Midsummer (July through August)

Answer

Early spring only

Answer

Year-round monthly applications

Question 6

What is thatch in a lawn and when does it become problematic?

Accepted Answer

Layer of dead organic matter between soil and grass blades; problematic above half an inch

Answer

Weed layer that competes with turfgrass

Answer

Dead grass from drought stress

Answer

Soil crust formed after heavy rain