I think it's the Outer Limits, either this one:
(From the Wikipedia episode list)
Season 1, Episode 9: "Corpus Earthling"
Gerd Oswald Orin Borsten (teleplay) and Louis Charbonneau (story)
Aired 8 November 1963
Parasitic aliens, with a plan to take over
the human race, take refuge in a geologist's laboratory disguised as
rocks. Although undetected by ordinary humans, one doctor (with an
implanted metal plate in his skull) is able to "hear" the aliens
communicate with each other while they discuss their plot. Although
the doctor is unsure if what he hears is a delusion or not, the aliens
see him as a threat and set out to kill him.
Or this one:
Season 2 Episode 6 "Cry of Silence"
Charles Haas Robert C. Dennis
(teleplay), Louis Charbonneau (story)
Aired 24 October 1964
A
city couple driving in the countryside makes a turn into a mysterious
valley road where their car hits a rock and stops working. After the
couple leaves their car, the wife has a slight accident in which she
rolls downhill and sprains her ankle. When the husband reaches her,
they realise they are being stalked...by tumbleweeds who appear to be
possessed by some form of energy. At first they attempt to keep the
tumbleweeds at bay with fire, but soon run out of firewood. At this
point they are saved by a slightly disturbed farmer named Lamont, who
explains that things have been awkward in the valley ever since a UFO
landed two weeks before, causing his farm to die out. Lamont tells
them he stayed merely out of curiosity, but now the weeds won't allow
him to leave either. The three make their way to Lamont's house where
they spend a frightening night surrounded by tumbleweeds first and
then thousands of frogs. Comes morning, they walk back to the car
without trouble, only to be attacked by living rocks once they get
there. One rock kills Lamont. The couple runs back to the house, where
the husband finally decides that the only way they are ever to leave
there is to attempt to communicate with whatever is behind all this.