Tips and Hints To save space, plant two varieties of citrus in the one planting hole. Common causes of the sudden death of young trees include overwatering, frost or bad drainage; for older trees the usual suspect is collar rot.
Check for collar rot each season, as early detection is the key to success. Old trees need a ‘renovation’ prune every five or so years. A glut of lemons and limes can be preserved by juicing and freezing the juice in ice-cube trays. Before juicing your citrus fruit, roll and press the fruit on a bench to loosen the liquids inside.