Tropicals & Tender Perennials: How do I kill EE?, 1 by LaLambchop

LaLambchop wrote:
I know how many love EEs here. I spent a lovely hour in the rain today trying to dig some up for someone who might want them. The result is that I discovered they are rooted very deep and while I got white stems with roots, I rarely got the tuber out. I don't need them where they are and need advice on how to kill them. They have spread all over my new gardenia area.

I'll still try to get some out if someone wants some, but I think they are just a common variety. Pic is of plants about 6 weeks old that came back after the new bed was put in. I have done roundup several times, but we get rain almost every afternoon, so I don't know how well it's working.

Thanks, Leslie