How this calculator works
The result is calculated from four inputs: your plant's species (which sets a baseline drought tolerance), pot diameter (smaller pots dry faster), available light (more light = faster water uptake), and the current season (winter slows everything down). The number you see is a starting point — always check the soil first.
Why "every X days" is not the whole answer
A schedule is a useful baseline but plant-killing levels of overwatering come from following the same schedule regardless of weather, light changes and potting mix. Use the calculator as a starting point. Then stick your finger one inch into the soil — if it's dry, water. If it's damp, wait.
Want exact advice for your specific plant?
Snap a photo with the free PlantCare Pro app. The AI identifies the plant, checks its health, and gives a watering schedule adjusted for your live weather forecast.
FAQ
How does the watering calculator work?
It estimates the days between waterings based on your plant's species drought tolerance, the pot size (smaller pots dry faster), the light conditions (more light = more water demand), and the season (winter needs less). The result is a starting point — always check the soil moisture before watering.
Is this calculator accurate for every plant?
It's accurate as a starting point for common houseplants. For exact watering needs, including disease risk and species-specific quirks, use the free PlantCare Pro app — it gives you a 0–100 health score and weather-adjusted advice based on your exact plant photo.