My hibiscus has been in a very large pot for over a year and has had no problems other than an occasional bug. Last week I moved to the country and the plant was transported by the mover's truck just a short distance. My son gave it some plant food and put on new top soil and a day later it had 3-4 beautiful large blooms. This morning the leaves are completely brown, brittle and drooping. It gets the afternoon and evening sun. Is there any help for it?