Growing rosemary indoors can be tricky. While it is one of the most drought-tolerant plants once established in the landscape, it resents drying out in a pot. Seldom will it recover once it has dried out. At the same time, it does not like wet soil. Check daily and keep the soil slightly moist. In the spring plant it in a sunny, well-drained location once the danger of frost has passed. Most of the topiary rosemary plantings available around the holidays are not reliably winter hardy outdoors in Tennessee. ‘Arp’ and ‘Hill Hardy’ are two of the hardier cultivars. ‘Arp’ has proven to be especially reliable.