I adopted my Dragon Tree a few months ago from Harmon's, a local grocery store, It was full and leafy for a while but then started to appear sick, I trimmed the heads like I was told and it said new ones would grow within weeks, the stalks started to shrivel up and I became very worried, I checked the soil and noticed that though it was repotted, someone had mixed several different soils including 1/3 of tulip soil or something like that, I know it needs to be repotted into all one soil, but I also noticed the smell of Cat urine. I found out that while I've been away, two cats had been openly using the plant to pee in, This tree is so precious to me I even meditate with it, now all the heads have been trimmed and all that remains is half a foot of stalk, and there are three stalks. I notice the center of the stalks were black, I figured the tree was dead and there was nothing I could do. It's been sitting in the same soil for a month with no sun and no water, just now I had a feeling I should trim the stalks one more time to see if they were black all the way down, and they are white! in the center it still appears to be fighting for life! I know I must get new soil and a mesh wire cover to keep cats out but is there anyway I can bring it back to health from all of this turmoil? I'll do anything for this poor tree. Any help would be greatly appreciated.