They can be obtained from harvesting the following:
- Mushroom clusters on The Islands That Once Were Turtles and Goshima
- Mushroom clusters on Uncharted Isles, at a rate of 1/400
- Exuberry bush on Uncharted Isles
- The berry planter on Tuai Leit
- Regular mushroom patches, such as the one near Canifis and Isafdar
When one is obtained, the player will receive the message: You find a zygomite sporeling!; it will be in the inventory.