I'm new to much of this, but we planted blueberry bushes about a month ago and now they aren't looking too healthy. The edges of the leaves are turning brown and shriveling. We live in West TN and I planted them in a large hole with a mix of compost (containing a great deal of chicken manure, oak leaves, hay/straw from inside the goat barn), dirt, and peat moss. They are in full sun. What am I doing wrong and is there anything I can do to fix it?