Knapweed
From Discworld MUD Wiki
Knapweed is a robust, weedy plant resembling a small thistle. Flower heads may be blue, red, yellow, white, or a mixture thereof, depending upon species. While some varieties can be eaten, knapweed is primarily recognized as a nectar source for bees.
A tall slender plant with purplish thistle-like flowers.
It is not poisonous to eat. On the other hand, nothing appears to happen if one does eat it.
Knapweed can be found in the following locations:
