MANY senior citizens in California like to do a little gardening, but one Romoland 77-year-old has much bigger ambitions for this backyard.

    He’s using it to host a 90-foot-by-60-foot (27.4-meter-by-18.3-meter) image of an alien’s face made out of rocks, in the hopes that it will attract UFOs, ABC News reported.

    Larry Decker started his project March 28 and finished the enormous image of a Grey alien — the kind that supposedly crashed in Roswell, New Mexico, in 1947 — three days later.

    Decker later told ABC 7 that his interest in what lies beyond Earth began when he was a 10-year-old living on a farm in southern Ohio.

    One day, he said, he was walking to a neighbor to get milk when he walked off the path and into a crop circle in a wheat field. That day he became obsessed with the idea of intelligent life in space.

    And now, he hopes, his own efforts — built with the aid of daughter Deb and grandson Josh — will have the same effect on them.

    “Aliens watch everything we do,” he told ABC News. “My idea was to build this thing big enough to be seen from up there, and hopefully, they’ll decide to come down and check it out.”

    Decker says he’s equipped his house with cameras to ensure that any visiting spacemen will be caught on film.

    “Wouldn’t it be nice to go to the porch swing and have a nice chat?” Decker said. “So hopefully this face will trick them to come, so we can shake hands and talk.”

    The specific alien he has chosen to build is known to space fans as a “Grey” — a pale-skinned, bulbous-headed creature.

    This is the species that supposedly crash-landed in Roswell, and was featured in an infamous 1990s hoax film known as the “Alien Autopsy,” which purported to show one of the Roswell aliens.

    They have since appeared in various films and TV shows, including “The X-Files” and the sci-fi comedy “Paul.”(SD-Agencies)