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Greenhouse Construction
A greenhouse is a sealed room that maintains a controlled growing atmosphere — temperate, oxygenated and pressurised — regardless of the world outside. It is what lets high-tier crops, and any crop in a hostile world (Nether, End, or a Nerospace planet), grow at all. See Growth Conditions for when sealing is required.
- Enclose an airtight room out of any solid blocks. Greenhouse Frame and Greenhouse Glass are the intended shell, but any full solid block counts as a wall — there must be no gaps to the outside.
- Place a Greenhouse Controller as part of the shell, touching the interior.
- Supply the controller with Nero Flux (NF) and, if crops are inside, Nutrient fluid.
The controller flood-fills the interior air pocket, bounded by the surrounding solid blocks and capped by the configured volume limit. Crops (and empty air) count as interior; grow beds and walls are boundary. The check runs only when the structure changes or on a slow safety interval — never every tick.
While formed, the controller spends NF scaled to the interior volume and Nutrient fluid scaled to the
number of crops inside, each upkeep interval. If it cannot pay, the greenhouse drops to Unpowered and
its interior stops being controlled until power returns. All rates and the volume cap are server config
values under the greenhouse.* keys.
Right-click the controller to read its state (formed, breached, unpowered, or unformed), interior
volume, active crop count, stored NF and Nutrient, and — if breached — the leak position that pushed the
fill past the cap.
See also: Greenhouse Troubleshooting.