I have planted a blueberry bush in a container. It has been planted for about 2months and has shown very little growth and the leaves have taken on a reddish purple hue and some are dying. I keep the soil moist. Am I watering too much or not enough or do I have a soil problem? I planted it in Miracle Grow potting mix. Sorry no photos.
The color change of red leaves can indicate too cold of temperatures, fungus disease, nutrient issues, or root rot.
You soil should be moist but never soggy.
The link below will help refresh you on the care requirements.