Here is a link to refresh you on the care requirements. Jul 4, 2013 - Explore Janice Ball's board "Persian shield", followed by 103 people on Pinterest. They are propagated by cuttings in spring and are easy to look after. It will sunburn and bleach if given too much, so just a little more light and not too much. Curled leaves on a lime tree can indicate several different problems. Dip the cut end into a hormone rooting powder and plant the cutting in a 7.5cm (3in) pot containing a moist, equal parts mixture of peat moss and perlite or coarse sand.