CSLB C-27 Landscaping ContractorPlanting and LandscapingMedium
A landscape technician is planting a 24-inch box tree. After digging the hole, which is twice the width of the root ball, what is the CRITICAL next step to ensure proper establishment and prevent future issues?
- ABackfill the hole completely with the removed soil.
- BApply a slow-release fertilizer directly into the hole.
- CLoosen any circling roots on the outside of the root ball.
- DWater the tree thoroughly before backfilling.
Show answer & explanationAnswer & explanation
Correct answer: C. Loosen any circling roots on the outside of the root ball.
Loosening circling roots is a critical step for proper establishment. If left unaddressed, these roots will continue to grow in a circular pattern, eventually girdling the trunk or major roots, leading to instability and decline.
Why the other options are wrong
- A. Backfilling immediately without addressing roots can trap circling roots and hinder growth.
- B. Fertilizing directly into the hole can burn roots; it's generally better to amend the backfill soil or apply after planting.
- D. While watering is important, addressing root structure is more critical at this immediate stage to prevent long-term issues.
Root Ball Preparation
The essential process of inspecting and correcting root issues on a tree's root ball before planting to ensure healthy establishment.
- Circling roots must be loosened, cut, or spread to prevent girdling.
- Root collar should be at or slightly above grade.
- Damaged or broken roots should be pruned cleanly.
Memory trick: Roots Released, Right Height, Robust future.