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Greenhouse Season Plans and Climate

Each greenhouse runs a season plan (Season extension, Protected overwintering, Cool vernalization or Post-chill forcing) and the game models its inside temperature, humidity, light and Botrytis risk from your real farm weather.

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Season plans

PlanWhat it means
Season extensionExtend the normal season with active scouting. Heats toward 65°F.
Protected overwinteringHold perennial stock cool and quiet; routine watering and harvestable growth pause. Heats only toward 42°F.
Cool vernalizationGive cultivars the 35–50°F chilling some need to flower. Heats only toward 42°F.
Post-chill forcingResume active growth only after chilling is met; winter forcing needs the full heat and control kit.

Rules for cold plans

  • Overwintering and vernalization can only be chosen from September through March.
  • They only count when the inside air is 30–50°F; otherwise the log says no dormancy or chilling credit was recorded.

How the climate is modeled

  • Inside temperature starts from the farm's outdoor high and low, plus sun warming (less with shade or double cover) and night heat held by the cover and curtain.
  • Exhaust fans and roll-up sides pull it back toward outdoor temperature on warm or humid days.
  • A powered heater warms toward the target (65°F, or 42°F on cold plans), limited by its 85,000 BTU/h capacity.
  • Light (DLI) is outdoor light through the cover (less under shade), plus 7 with powered lights.
  • Humidity rises with more plants, a mist bench and automatic watering, and falls with ventilation.
  • Botrytis risk is High at 85% humidity or more between 55°F and 75°F.

Weekly heating cost

When the heater and electrical service are installed, each week costs coins based on how far the week's temperatures fall below the target (at least 2 coins). The double-layer cover, energy curtain and controller all lower it.

See also

Written from the game itself. Spot something out of date? and our farm team will check it.

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