A seed lands on Earth in a desert or plain. The story was told through the point of view of a plant, and later a crow. The plant is conscious and eventually kills the crow, then takes over the planet by spreading seed I think. It was a short story.
"Seeds of the Dusk" by Raymond Z. Gallun?
A description found online:
Its 31 pages give us an insight into the lives and fates of three species: an alien invading plant intelligence; the descendants of crows; and the descendants of Man. Into this short tale are packed great events and an unforgettable, haunting mood which is well encapsulated in the title.