Epiphytic Perennial: Leaves develop holes (fenestrations) as the plant ages making the leaves resemble Swiss cheese. Unique, marbled variegation of creamy mint-green and dark emerald range from delicate swirls to specks. USDA Z10-12. Creates a tropical look indoors. As a houseplant: Put in indirect, bright light. Provide a moss pole or trellis for support. Avoid soggy soil, water when the top 2-3 inches are dry. Toxic to humans and pets if ingested.