Yucca removal

Question

I have 2 yuccas which I thought I’d dug out, but now they’re growing out and alongside my young English Box hedge. How can I kill/remove the yuccas without killing my hedges? My main plan was to pull out the hedges, dig the entire planter up, then put new dirt in and put the the hedges back in. Is there an easier method of killing/removing, or continue with this?
(The planters are fairly small, being approximately 2-3 metres long, the yuccas at each end.)

Answer 1

Pulling the hedges up will be the most successful option, but could damage the shrubs if not done properly. You can continue to pull up new sprouts as they appear or carefully apply glyphosate on them. It will take persistence but eventually you will win.

These articles will help decide:

https://www.gardeningknowhow.com/ornamental/trees/tgen/transplanting-trees.htm

https://www.gardeningknowhow.com/ornamental/foliage/yucca/removing-yucca.htm