Conversion Cost: 600 Equipment
Nominal Growing Time: 540 (90 days)
Nominal Crop Yield: Varies. In general, one crop yield will support 3 kerbals for 90 days Specialist Skill: Scientist
Specialist Bonus: Growing time reduced up to 50%, crop yield increased up to 50%

The Prairie (a.k.a. P.O.T.A.T.O.) greenhouse is one of the configurations for the Chuckwagon. It is only available if you have a life support mod installed such as Snacks, TAC-LS, and USI-LS. The greenhouse is designed to consume resources continuously but grow crops over time. In general it takes 90 days to grow crops, but that time can be reduced by a skilled scientist.

As in the real world, crops can fail. Once the growing time completes, Pathfinder will check to see if you receive a partial yield, full yield, improved yield, or failed yield. A partial yield reduces the amount of crops you receive, and a failed yield means that you receive no crops at all. By contrast, a full yield gives you the nominal amount and an improved yield gives you more.

The resources consumed varies depending upon the life support mod installed:

Snacks

With Snacks installed, the Prairie uses the following recipe:
Inputs
Water: 0.002 units/sec
Fertilizer: 0.002 units/sec
ElectricCharge: 6 units/sec
Required
Dirt: 400 units

TAC-LS

With TAC Life Support installed, the Prairie uses the following recipe:
Inputs
CarbonDioxide: 0.00014 units/sec
Water: 0.00000357 units/sec
Fertilizer: 0.000001 unit/sec
ElectricCharge: 7 units/sec
Output
WasteWater: 0.000001 units/sec
Oxygen: 0.000115 units/sec
Required
Dirt: 705 units

USI-LS

With USI-LS installed, the Prairie uses the following recipe:
Inputs
Water: 0.0002 units/sec
Fertilizer: 0.0002 unit/sec
ElectricCharge: 6 units/sec
Required
Dirt: 400 units