Reptiscape Jackfruit Leaves are an excellent leaf litter that you can use in a terrarium, vivarium or aquarium. They also make a tasty treat for your isopods and springtails in a bioactive terrariumJackfruit leaves come from the Artocarpus heterophyllus (Jack Tree) They produce the largest tree fruit that can weigh up to a massive 55kg (120lbs). The fruit is typically sweet, and is used for many deserts. Jackfruit has a “meat like” texture and can used as a pork substitute for some dishes.Using Jackfruit Leaves in a Terrariu..