My bay tree , which is about three feet tall, is in a pot from the nursery, and the leaves are turning yellowish instead of green. My friend says it needs iron, but I'm not sure. [I did use a diluted solution of iron on dwarf magnolia variety Ann, for similar leaf yellowing, and that hasn't stopped growing & blooming since (2 years and it never goes entirely dormant).] Should I try on the bay tree 1) a very dilute solution of iron, 2) repotting it, or 3) planting it in the ground? It's been in the pot since it came from the nursery 2 years ago. Would sure hate to lose it, as the fresh leaves have a fabulous flavor, quite different from SO,SO dried bay leaves!