It's A Jungle In Here

This is growing in my house!! We noticed it a couple of months ago and pulled the plants out of the baseboard. It is amazing how much strength plants have. They have pushed through the sealed baseboard - right up through the caulking. There was no gap or hole in the caulking, but they pushed through anyway. Cliff has tried to kill them off, but they just keep growing. He has inspected outside and inside, but somehow they are growing from under the block outside.
If this keeps up, we might have a forest before we know it.