I am in zone 5 (brrrr) and had a full sun hillside covered in yuccas. I tried to dig them all out. Replanted with Russian sage, blue fescue, lavender, other low maintenance, drought tolerants. But the yuccas keep coming back, and coming back, and coming back. How can I get rid of them??? Help!

Welcome to The Garden Helper Sunnylin

I have no clue but have you tried Round Up at all?

I'll trade you my evil burmuda grass for your yucca! I'm a cactus lover....okay Bill says I'm a cactophile.
Catlover