How to Kill a Juniper Cedar Tree With Poison

Remove obstructions from the path of the tree in the direction you want it to fall.

Cut the juniper cedar so there is a stump to work with. Put on gloves and slice into the trunk with a hand saw to cut juniper cedars with a trunk diameter of up to 8 inches. Use a chainsaw to cut junipers with larger-diameter trunks. Make the cut 1 foot off the ground. For small trees, start to cut into it on the opposite side of the direction you want it to fall. For the larger trees, cut a wedge one-third of the way into the tree on the side that you want the tree to fall, and then cut straight into the tree from the other side to release the tension and let the tree fall.

Cut the trunk down lower to the ground once the tree has fallen.

Apply glyphosate herbicide to the freshly cut stump. Open a container of concentrated glyphosate and dip a paint brush into the herbicide. Begin working as soon as possible as the top of the stump will begin to seal itself almost immediately after it has been cut.

Paint the glyphosate onto the top of the stump, paying particular attention to the area immediately next to the bark. The herbicide will be more readily absorbed in the areas along the edge where new growth takes place.