Certified Arborist Test Installation and Establishment 3

Question 1

What is 'transplant shock' and how long can it last?

Accepted Answer

Stress from root loss during transplanting; can last 1-3 years

Answer

Transplant shock results from significant root loss during the digging and moving process. Trees may show reduced growth, leaf scorch, or dieback for 1-3 years until the root system regenerates.

Question 2

Which soil amendment is most universally recommended when backfilling a tree planting hole?

Accepted Answer

The original native soil without amendments

Answer

Current best practice recommends backfilling with the original native soil. Amendments can create a 'container effect' where roots circle within the amended zone rather than growing into surrounding soil.

Question 3

What is the recommended ratio of root ball diameter to planting hole width?

Accepted Answer

2-3 times wider

Answer

The planting hole should be 2-3 times wider than the root ball but no deeper. This wide, shallow hole loosens soil for lateral root growth, which is how most tree roots naturally spread.

Question 4

A newly planted tree shows leaf scorch on the south-facing side. What is the most likely cause?

Accepted Answer

Sunscald from sudden exposure to direct sun

Answer

Trees grown in shaded nursery conditions can develop leaf scorch when suddenly exposed to full sun. The south-facing exposure receives the most intense sunlight.

Question 5

When is the best time to plant most deciduous trees in temperate climates?

Accepted Answer

Fall after leaf drop or early spring before bud break

Answer

Fall and early spring are ideal because trees can establish roots while not expending energy on leaf production. Cool temperatures reduce water stress during the establishment period.

Certified Arborist Test Practice Test

Certified Arborist Test Practice Test

Certified Arborist Test Installation and Establishment 3