The show's episode run was first reduced from 13 episodes to 10 in April 2019, then in June of that year, the show was canceled, just five days after the first episode of the show aired. The show was thought to be canceled as part of the winding down of original scripted TV shows at DC Universe.

Will there be a Season 2 of Swamp Thing on CW?

Swamp Thing: Cancelled; No Season Two for DC Universe Series.

Did Swamp Thing have an ending?

Both Swamp Thing and Abby also have a reasonably happy ending. ... Last episode, he finally answered his destiny and became the Blue Devil which allowed him to save Liz and Abby from the Conclave mercs. He believes that it is now necessary to go out into the world and find out what he is supposed to do with his new powers.