ruderal (ROO-der-uhl) - adj., (of a plant) growing in waste places or disturbed soil.
Also, as a noun, such a plant. These are the first volunteers to grow after a fire, landslide, cultivation, or roadbuilding has disrupted the soil or existing vegitation. This makes them invasive species more or less by definition. Coined around 1840 from Scientific Latin rūderālis, from Latin rūdus, rubble/broken stone.
---L.
Also, as a noun, such a plant. These are the first volunteers to grow after a fire, landslide, cultivation, or roadbuilding has disrupted the soil or existing vegitation. This makes them invasive species more or less by definition. Coined around 1840 from Scientific Latin rūderālis, from Latin rūdus, rubble/broken stone.
---L.