Pink Pewter Lamium perennials thrive best in part sun to fully shaded areas. If you live in the northern parts of the United States, your plant can grow in almost any sunlight conditions; from full sun to full shade, your plant will thrive. However, if you live in Southern parts of the country, we recommend giving your plant time in the shade throughout the day. The best time to give your plant shaded time is in the midafternoon. Doing so will help keep your plant shaded and protected from the harsh, hot sun. It is crucial to note that Dead Nettle plants do not like excessive heat and humidity.