Strange Horticulture is an occult puzzle game set in the eerie town of Undermere, where players take on the role of a plant store owner. The gameplay involves finding and identifying a variety of unique plants while interacting with a cast of intriguing characters, including a coven and cult members. Players can also engage in activities such as petting their cat and using their plant collection to influence the unfolding story, all while uncovering the dark mysteries surrounding the town.

The game encourages exploration beyond the shop into the perilous lands of Undermere, where players must use context clues to navigate through treacherous environments. With a trusty encyclopedia at hand, players can learn about the effects of various plants, which can range from hypnotic hallucinogens to deadly poisons. This deepens the gameplay experience, allowing for strategic decisions that affect the narrative and enhance the overall immersion in this captivating puzzle adventure.