Greenhouse Management Simulation

Greenhouse Environment

Air temperature 26 °C

Relative humidity 55 %

Light intensity 70 %

Growth rate

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Avg. plant height

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Stress level

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Harvest cycles

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How it works

Every plant's growth rate is the product of three independent suitability factors — one each for temperature, humidity and light — multiplied together. Each factor peaks at an optimal value and falls off on both sides, so being too hot is just as bad as being too cold, and too humid is just as bad as too dry. Ventilation actively pulls the greenhouse's temperature and humidity back toward outside conditions, damping extremes but also capping how far you can push either one.

growth = base · f(T) · f(H) · f(L)
f(x)   = exp(−((x − x_opt) / σ)²)   for T, H
f(L)   = 1 − exp(−L / 45)          (light saturates)
stress = 1 − f(T)·f(H)·f(L)

Air temperature — each crop has a narrow optimal band (here centered near 24 °C); enzymes driving photosynthesis and respiration slow sharply outside it.
Relative humidity — too dry stresses leaves through excess transpiration, too humid invites fungal disease and slows the stomata's gas exchange; growth peaks near 60%.
Light intensity — photosynthesis rises with light but saturates: doubling light from a low value helps far more than doubling it from a high one.
Ventilation — toggling it on blends the greenhouse's internal temperature and humidity partway back toward the outside baseline every frame, the way roof vents and fans do in a real structure.

Watch the canopy: healthy plants in the optimal band turn a deeper green and grow tallest each cycle, while stressed plants under harsh temperature, humidity or light yellow and stall before the next harvest reset.

Healthy growth Moderate stress High stress

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