Wonderfully adaptable, Persian shield grows in sun or shade. When grown in full sun, especially in hot climates, it needs regular watering to keep it from wilting. Make growing Persian shield easier by spreading a 3- to 4-inch-deep layer of mulch over the soil around the plant. This helps keep the soil cool and moist longer. You can also do this if you grow Persian shield in containers! Fertilize Persian shield in spring with a general-purpose fertilizer. Follow the directions on the packaging for tips on how much and how often to fertilize. You can prune Persian shield at any time. Pinching it back occasionally encourages the plant to have a fuller, bushier shape -- especially in shade. Note: Persian shield is not intended for human or animal consumption.