A deck is being built over two yucca plants that I need to get rid of. Is digging out the only way? I heard roots are 4 feet long.
Yucca Need to Kill (How)
Certified GKH Gardening Expert
To kill it, cut it down as close to the ground as possible and then paint the fresh cut with concentrated Round-up. Keep an eye on it and if you see any shoots, you can repeat this process. This article will also help: https://www.gardeningknowhow.com/ornamental/foliage/yucca/removing-yucca.htm