Red Seal Landscape Horticulturist Practice Exam

What is the ideal time for planting most trees and shrubs?

1. Spring and summer

2. Fall and winter

3. Late summer

4. When the ground is frozen

The correct answer is: Fall and winter

The ideal time for planting most trees and shrubs is in the fall and winter. Planting during the fall allows the plants to establish their root systems before the onset of winter, when the ground is often still workable. Cooler temperatures and increased rainfall in the fall provide ideal conditions for root development, as the plants can focus their energy on growing roots rather than foliage. During the winter months, if conditions are appropriate (i.e., the ground is not frozen), trees and shrubs can also be planted with the understanding that they will remain dormant. This dormant planting allows them to acclimate to their new environment without the stress of active growth. When spring arrives, the plants can take advantage of the warming soil temperatures and begin to grow actively, setting them up for a successful growing season. Spring and summer are typically more challenging for planting due to increased temperatures and potential drought conditions, which can stress newly planted trees and shrubs. Late summer comes with its own challenges, as plants may not have enough time to establish roots before the stress of the upcoming winter. Planting when the ground is frozen is impractical and can be detrimental to the health of the plants, as the roots would not be able to properly establish in frozen soil. Thus, fall and winter plant