We had already dug & dug & dug several times and that only slowed it down some. I could clearly envision it going straight up the drain field & right on into the septic tank. We had a concrete block wall around the property & the footer for that wall was 2' under the grade and 1' thick. The Clerodendrum sent out underground runners that traveled 3' down to go underneath the footer which was 2 and 1/2 feet wide & then went up on the other side. It was like the plant from outer space trying to take over the world. Too bad too as it's one of the prettiest plants you'll ever run across.
What's the old saying? Desperate times call for drastic measures?