I'm placing this in a few different forums hoping I get some responses. I very ignorantly planted some of this in my back shade bed about 5 years ago. It's called houteyniia or something like that - I know I butchered the spelling. It didn't do anything for the first year, but the year before last it exploded and has swallowed everything in sight. I pulled up some of it last year, but didn't do a great job - I know there's a ton of it lurking underground ready to pop up this year. I am putting in an above-ground pool and a retaining wall is going to have to be built behind the pool because of the change in grade. My question is this - the guy wants to dump all the dirt from the excavated area behind the new wall, which will in effect, bury the area the chameleon plant is under 2 or 3 feet of soil. Will it be able to come up through this or will it be killed by placing all this extra dirt on top? I will dig up the few Hosta, Bleeding Hearts, Corydalis, etc. I have back there and am hoping I can replant these once all the excavating is done and the soil is amended. I don't want to have the same problem tho. I'd rather dig it up now rather than wait and have it come back in an even larger area a couple of years from now. TIA!