How do you kill a Brazilian Pepper tree?

Answer

Garlon 4 at 12% mixed with an oil carrier such as JBL oil. High rates of glyphosate (Roundup) can also be effective in some cases. Garlon 4 and glyphosate can be applied to the cambium of the cut stump. Only Garlon 4 or similar chemical with an oil carrier can be applied to the bark of an uncut tree.

Use the foaming stuff that coats the pipes here www.foamingrootkiller.com rootx.com or roobiieeic.com

the foam works better than just crystal

hope that helps