Jackfruit leaves ( Artocarpus heterophyllus ) are used in terrariums to enrich bioactive soils, maintain humidity, and feed scavengers such as woodlice and springtails. They also promote the growth of beneficial microorganisms. In aquariums, they release tannins that acidify the water and have antifungal and antibacterial properties. Their durability and natural appearance make them an excellent addition to bioactive habitats.