Question 1

What is the difference between an élagueur and an arboriculteur?

Accepted Answer

An élagueur specializes in tree pruning for maintenance, safety, or aesthetics, focusing on climbing and cutting techniques. An arboriculteur, often considered the 'doctor' of trees, has in-depth knowledge of plant biology, diseases, pests, and growth patterns. They diagnose problems, propose treatments, and ensure interventions respect the tree's health. An ISA Certified Arborist can provide precise diagnoses and plan sustainable interventions, often performing pruning and other work themselves.

Question 2

What is the best time to plant a tree?

Accepted Answer

The best periods to plant a tree are in the spring, between soil thawing and mid-June, or in the fall, between early September and mid-October. Summer planting is possible but requires extra attention to watering. The key is to avoid extreme temperatures (heatwaves, frost) and opt for times when the soil is malleable and rainfall is regular, ensuring optimal moisture for root development without water stress.

Question 3

How do I prepare the root collar when planting a tree?

Accepted Answer

Trees in pots often have excess soil at the base of their trunk, just above the main roots, called the root collar. It's crucial to clear this excess soil and cut any fine roots that have developed there. The goal is to ensure the top of the root ball is at the beginning of the tree's main roots. A buried root collar can lead to chronic health problems and trunk weakening due to constant moisture and rot.

Question 4

How should I dig the hole for planting a tree?

Accepted Answer

The hole should be the same height and diameter as the root ball. The root collar should be level with the ground once the tree is planted, never below. Planting too deep can cause the tree to suffocate. This precision ensures long-term impact and proper development.

Question 5

What is the purpose of loosening the soil around the planted tree?

Accepted Answer

After planting and sectioning circular roots, loosen the soil in a radius of three to four times the width of the root ball. This creates an adequate environment for long-term root development, which is particularly important in clay or compacted soils.

Question 6

What type of mulch is recommended for newly planted trees?

Accepted Answer

A good mulch protects roots, conserves soil moisture, and limits weed growth. Cedar mulch or, preferably, fragmented branch wood (BRF) – a nutrient-rich mix of pruning chips, branches, and buds – is recommended. Apply a layer of 3 to 4 inches, forming a donut shape and leaving a clear area around the root collar to prevent trunk rot.

Question 7

How often should I water a newly planted tree?

Accepted Answer

For the first two years after planting, water with a hose equipped with a moderate-flow nozzle for 5 full minutes, two to three times a week until the first frost. This provides sustained water until the roots firmly establish themselves in the soil.

L'Ambassadeur de l'arbre - Élagage et soins des arbres Aylmer

L'Ambassadeur de l'arbre - Élagage et soins des arbres Aylmer