I have recently planted some laurels and they do not appear to be growing very well. I have been feeding them with Richard Jackson's flower power and it doesn't appear to be working. I read on a forum that Epsom salts help and have been feeding the laurels with this for two weeks, 1 feed every 7 days. There is a tree next door and they also have a pond so I'm assuming they are causing the problem. I really need these laurels to grow as my garden has no privacy! Please help.