MY PIERIS FOREST FLAME HAS GONE YELLOW!
I bought a pieris "forest flame" and planted it in my garden about 4 weeks ago. The beautiful red leaves on the top have gone from red to pink and now yellow? I am aware that Pieris like acidic soil so I purchased some ericaceous miracle gro feed and have been feeding it every 2 weeks as advised on the box. Please can anybody help me turn it back to red??