A thistle is a flower that grows on thistle plants, found in the Toxic Valley region of Appalachia. Similar to the giant pitcher plant and firecracker berry, the thistle plant is volatile. When trampled, they will start to rattle before exploding, creating toxic smoke and dealing 30 radiation damage in a medium radius. The flowers cannot be gathered afterward.
- Willard Corporate Housing:
- Two in the housing area itself.
- Four northwest of the housing area.
- One just northeast of the housing area.
- One to the east of the housing area.
- Wavy Willard's Water Park:
- One just northwest of the park.
- One between the park and Willard Corporate Housing.
- Twonear the front entrance.
- One can be found in Grafton near the booby-trapped mini-mart on the north side of town.
- One can be found south of Graninger farm.
- One can be found in the parking lot of the Pioneer Scout camp.
Prior to patch 220.127.116.11, harvesting from irradiated thistle yielded regular thistle.[patched]