Peace lilies (Spathiphyllum spp. and cvs., Zones 11–12) are evergreen perennials native to much of Central America and Southeast Asia. But their glossy leaves and tan, spiky flowers surrounded by white bracts have made them popular houseplants around the globe. Luckily, they are resilient and not too demanding. However, if you want to make your peace lily thrive and bloom, you should strive to meet all of its requirements. Providing your plant with what it needs will reward you with mesmerizing flowers and lush foliage.