Hi, can anyone help, I have a small pom pom tree that is potted (approx 4 feet tall). Last year the underside of the pom poms went brown and new green needles came through, this year, nearly all the pom poms are brown and I can't see any more green coming though. Is a lovely tree, what could this be?. How can I help to bring it back? Any help very much appreciated. Thank you