My hydrangea needs help! The plant started out nice and purple. Now it's pink and turning green. It looks like mold or mildew on the petals. I live in Richmond VA and bought this plant at Lowes. I moved it from it's original small pot to a large pot with potting soil. I bought Miracid yesterday and hope it will do the trick. I do not have the tag or know what type it is. I've attached a picture so you can see what it looks like. Do you think I can save it? Thanks! Sarah