We just moved to Tenn and we have serveral blueberry "trees", they are about 6-7' tall. they have not been well taken care of, there is confederate jasmine covering some of them and weeds around all of them. Could i get directions as how to prune them (to what height), when and how much of what to fertilize them. and will it be ok to fertilize them now? Any other info on how to 'rescue' them would be appreciated. Our local ag center doesn't have any info right now. thx stef