Greenhorn Grove is a relatively quiet woodland forest home to many beasts and humanoid-like creatures that inhabits the area. Most of the flora that can be found here are not as big and lush when compared with The Deep Forest, as the grove appears to experience little undergrowth. In addition, many small ditches and dens are carved into the grounds, littered by fallen trees, shrubs, vines, and mushrooms that covers the surfaces.
It is part of The Deep Forest and spans half of Topple Hill's hillsides. It encompasses Red Ant Cove, a zone hidden deep within the forests, and partially borders Farm Fortress, Rubble Spring, The Quiet Field, and Twinkling Meadow at various points.
There are 3 landmarks that should be noted in Greenhorn Grove the first being Collectus Pillar, second being Greenhorn Cavern, and the last one the Mining Reservation.
As expected of a large forest Greenhorn Grove has a large assortment of birds such as Blackbird, Bluenal, Brownbird, Cloudbird, Dust Raptor, Frester, Greenal, Looter's Bird, Red Dragonbird, and the Rednal.
Harvestables that can be found in Greenhorn Grove include Angry Bushdweller, Bobber Mushroom, Boomba Mushroom, Flatty Mushroom, Gorbacabbage, Glow Mushroom, Grateful Frog, Grugbug Mushroom, Honey Mushroom, Lumoore Mushroom, Portabato Mushroom, and the Spurtle Mushroom.
Mobs that can be found in Greenhorn Grove include Ancient Iron Knight, Apple Bat, Black Ant, Black Bear, Blackrock Wolf, Blue Lantern, Cellery, Croc Man, Dark Ghost, Dark Snibber, Deer, Dull Frog, Egg Snatcher, Ghost, Golden Spore Mole, Green Ghost, Grey Rabbit, Jester, Little Ant, Munsk, Mushroom Head, Ogre, Otherworldly Dollhunter, Ratboy, Red Croc Man, Red Lantern, Spore Mole, Toyblock Spitter, and the Two-Eyed Monstrosity.
- The Interdimensional Traveler may appear in the grove at various points.
- Greenhorn Grove could derive from the meaning of 'inexperienced grove', referencing the fact that Greenhorn Grove is one of the first places that a beginner player will explore.
- During Roblox Egg Hunt 2019, the Greenhorn Grove was the 'host place' where the event took place, as the Egg Snatcher can only be found here.