Uptownange

Three weeks ago my musa basjoo has 6 leaves with one still curled preparing to open. Each new leaf was 14 - 18 inches long, it was healthy and beautiful. I noticed my leaves were browning, there was white stuff on the leaves and webbing, determined I had spider mites. I purchased a neem oil based insecticide for spider mites from Lowe’s sprayed it in the evening, wiped and hosed it down the next morning. I repeated this cycle 4 days later. Despite my efforts all of my leaves browned, I could see the tiny mites (although fewer) still crawling. My leaf that was still curled was browning at the tip and in spots on the middle.

I decided to cut all the dead leaves off since they were completely brown and treat with a mixture of anti-bacterial soap, cooking oil and water. I sprayed the plant, wiped it down a few hours late and then hosed it down. After a week, it seems i have no mites (but i also have no leaves. I decided to remove the curled leaf since it was turning brown and mushy and discovered another smaller curled leaf inside also brown and mushy at the tip and then another (the one pictured) inside that.

The small pup on the side browned a little, but has continued to sprout two new leaves over the past week. Please help, I don’t know how to save my plant!

I uploaded a picture of it into my gallery