Stranded on Mars, Matt Damon's Mark Watney faces countless challenges, on the least of which is figuring out how to grow enough food to keep himself alive until he can be rescued. Luckily, he reminds everyone in this new clip from "The Martian," he's a botanist.

"Mars will come to fear my botany powers," he says.

Based on the 2011 novel by Andy Weir, director Ridley Scott's sci-fi adventure stars Damon as an astronaut who’s presumed dead during a mission to Mars and left behind by his crew. Struggling to survive with only meager supplies, Watney manages to get a signal to Earth, leading NASA to search for a way to bring “the Martian” home, even as his own crew hatches a daring — and seemingly impossible — rescue plan.

Opening Oct. 2, “The Martian” also stars Jessica Chastain, Kristen Wiig, Kate Mara, Michael Pena, Sebastian Stan, Jeff Daniels, Sean Bean, Chiwetel Ejiofor and Donald Glover.