You've made a hole that looks oversized, you've set up a telecom-worthy stake, you've got a huge bag of good, organic food for your tree's future needs… So far so good.
On the other hand, you will have to put the tree in its hole. This is where the question comes in, "how deep should i put it on? »
The collar is the transition point between the trunk and the roots (located at the base of the trunk). The collar should be just on the surface of the ground , after filling and compaction of the earth.
In the case of a tree in a container, 3 to 5 cm of soil above the root ball is sufficient.
To properly visualize the level , place the handle of the spade across the hole, it will serve as a ruler.
Subsidiary question :yes but, (it often starts like that…) if I make a basin this summer to water my tree, it will have a very thin collar, poor thing!
Exact! Poor thing... The base of the tree will be weakened and more sensitive to sunlight.
Sono bowl ! It will be enough to make a circular bleeding , 30 or 50 cm from the trunk which will serve as a watering basin; In fact, a basin without digging at the foot of the tree! And voila.
