Plant Science & Biology

Crop Planner

Crop scheduling and production planning simulation.

Create a free account to use this calculator

The Crop Planner is included with a free VibeLux account.

Create a free account Already have an account? Sign in

What it does

An hour-by-hour simulation of a grow room's environment, plant response and economics for a chosen crop. It runs at selectable speed and exports a PDF report.

When to use it

Use it to compare crops, setpoints, lighting schedules and planning modes against projected yield, energy use and profitability.

How it calculates

VPD = 0.6108·exp(17.27T/(T+237.3)) × (1 − RH/100)
Plant stress = mean of temperature (±5 °C), humidity (±20%) and VPD deviations from stage optima
Photosynthesis = light saturation fraction × CO₂ effect × (1 − 0.7 × stress)
Lighting power = 35 W/m² per 100 PPFD, 65% of it as heat; cooling power = lighting heat ÷ 3.5 COP

What you enter

Width, Length, Height(m)
Crop type(12 profiles, e.g. Butterhead Lettuce, Genovese Basil, Cherry Tomato, Petunia)
Growth stage and plant age(days)
Light start hour and end hour
Max Intensity(PPFD)
Day and night temperature(°C)
Target Humidity(%)
Target CO2(ppm)
Planning type, total cycles and succession interval(days)
Electricity, natural gas, water, labor and nutrient costs, and market price override

What you get

Temperature, humidity, VPD, CO2 and PPFD
Plant stress, photosynthesis, transpiration and growth rate
Biomass and days to harvest
Energy consumption (kWh) by lighting, heating, cooling and ventilation
Daily Operating Costs($)
Projected yield, revenue, profit margin and ROI
Pest & disease risk level and factors
Annual or multi-cycle schedule and summary

Related calculators

All calculators