How do you kill/get rid of permanently two large cordyline trees?

Drill holes in the trunk of the tree with a power drill at a height you can reach comfortably. Drill three or more holes in the tree spaced evenly around the outside of the trunk. Drill each hole at a slight downward angle toward the center of the tree trunk until the cutting end of the bit reaches the center of the trunk.

Make each hole level with the hole next to it so that the holes form a horizontal band around the trunk of the tree. Check the size of the holes against the nozzle of your pump sprayer and make sure that the end of the nozzle fits snugly inside the holes.

Load your sprayer with herbicide containing undiluted glyphosate herbicide according to the directions for your sprayer. Set the nozzle on your sprayer to a fine stream and lightly pressurize the spray tank. Place the end of the spray nozzle into each hole and spray glyphosate down each hole until it is full. Take care not to overfill the holes or spill herbicide.

Round up can do the job,must likely,Just get in inside the inner bark,use cotton or drill holes Hope this help you,best of luck!! Get the stronger of round up!

The easiest way I've found to get rid of large mature trees is to dig holes all the way around the tree. Boil enough water to fill the holes. Add about half box of salt to the boiled water for each hole and put it in the hole. The leaves should start to yellow Regardless after a week do it again After 4 to 5 times tree gone!!!

I've never heard of a cordyline ree, but whatever it is, best luck in getting rid of it!

How to remove Cordyline roots

Had work done recently. I emphasised to builders to remove roots before building new raised beds and patio area.They hacked away at it got it down approx 10inches below ground level and then suggested poisoning the remains of the stump. I said no as would poison the ground for new planting and asked that they continue to break it down and dig it out. New raised beds in a month and already new shoots of the Cordyline popping up on the patio area and probably will appear in the raised bed in due course. I could go chasing them to dig it all up again but I don't fancy my chances of them coming back!

Thanks

Esther

Thank you to everyone who has messaged, we did manage to cut one part down and have got a tree stump killer on it, we have also put deadfast on most of it, it is now starting to yellow all the leaves. 👍🏻😁