Blue Prince: Greenhouse Room Guide
Image Credits: Dogubomb, Blue Prince
The Greenhouse is a peaceful-looking little room with BIG strategic value. It not only boosts your chances of drafting more Green Rooms, but it also plays a key role in unlocking one of the mansion’s more hidden areas if you’re willing to do a bit of item hunting and crafting.
Read More: All Rooms in Blue Prince
What the Greenhouse Does
Costs 1 Gem to draft
Once added to your floorplan, you’ll be more likely to draw Green Rooms for the rest of the day
It’s a Dead-End, so plan where you place it carefully
Counts as a Green Room, so it works with things like the Patio and Veranda for extra item generation
This is great for players running a Green Room-heavy strategy or looking to maximize utility rooms and loot.
Greenhouse & the Broken Lever
The Greenhouse also hides a mechanical lever system that’s tied to the southern door of the Antechamber. But there’s a catch: the lever is missing.
To fix it, you’ll need:
Broken Lever – A random item that may appear in rooms like the Spare Room or Security Room
Sledgehammer
Battery Pack
With all three, you can head to the Workshop and craft a Power Hammer. Bring that back to the Greenhouse, and you’ll be able to repair the lever and unlock the southern Antechamber door.
Final Blurb
The Greenhouse quietly opens the path to deeper puzzles… If you’re paying attention. If you’re chasing item-rich runs or aiming for the Antechamber, this room is well worth your Gem. Just don’t forget your Power Hammer.

