The cut stump method involves cutting the plant off completely at its base (no higher than 15 cm from the ground) using a chainsaw, axe, brushcutter or machete (depending on the thickness of the stem/trunk). A herbicide solution is then sprayed or painted onto the exposed surface of the cut stump emerging from the ground, with the objective of killing the stump and the root system.
It is imperative that the herbicide solutions are applied as soon as the trunk or stem is cut. A delay of more than 15 seconds for water-based herbicides and one minute for diesel-soluble herbicides between cutting and applying the chemical will give poor results.
Two operators working as a team can perform this method effectively. The herbicide can be applied from a knapsack, or with a paint brush, drench gun or a handheld spray bottle. It is a good idea to use a brightly coloured dye in the solution to mark the stumps that have been treated.
For trees with large circumferences, it is only necessary to place the solution around the edge of the stump (as the objective is again to target the cambium layer inside the bark). The stump circumference should be bruised with the back of an axe and each successive blow treated with herbicide.
This method has the appeal of removing the weed immediately, and is used mainly for trees and woody weeds. This method is also referred to as cut and spray, or cut and paint.