The required environment to attract a diseased jadinko is a boneyard and a banana tree (for which the farmer payment is four baskets of apples). As with every other plant requirement in Herblore Habitat, the correct combination will take effect as soon as it is planted/built. It is not necessary to wait for the banana tree to grow. However, if the tree gets diseased or dies, diseased jadinkos cannot be caught. If tracks lead to one of the holes, more Jadinko tracks will always appear from one of the other two holes.