Does the daphne need acid fertilizer.
Daphne grows best in soil with a pH of 5.5 to 6.4; however, anything under 7 will be OK. Start with a soil test to determine present pH. There is too little modifier in acid-loving plant fertilizer to make a noticeable change in soil pH. If your pH is too high, use products made for lowering pH such as aluminum sulfate or a slow release sulphur product. It is very important to follow instructions or you risk damaging your plants.