NCGS Hole Typologies
How the ground around a planted tree was finished. From KIA-Adapt A7, where a raised border held water and a mound shed it.
Basin below ground level
The tree sits in a depression; holds water, risks waterlogging in wet ground.
Flat, no border
Mound above ground level
The tree sits on a raised mound; sheds water, suits wet ground.
Raised border or ridge
A ring of soil around the tree holding water at the stem. The recommended finish on the Highveld.