The Hoya krohniana 'Black' (often sold interchangeably or confused with Hoya lacunosa) is a highly sought-after, trailing tropical epiphyte native to the rainforests of Southeast Asia. It is famous for its petite, heart- or teardrop-shaped leaves that emerge with shades of green, bronze, or red and mature into a dramatic, deep maroon or near-black hue when exposed to bright light.