Houseplant Watering Calculator
Stop guessing. Pick your plant, its light, the season, and pot size — Thumbs gives you a personalized watering schedule in seconds. No more overwatered roots or crispy brown tips.
Your plant
Water your Pothos about every 11 days right now.
Quick check before you water:
Stick a finger 1–2 inches into the soil. If it feels dry, water; if still damp, wait a couple more days. This calculator is a starting point — always confirm with the finger test.
Light changes everything
A plant in bright light uses water far faster than the same plant in a dim corner. Tell Thumbs the real light it gets, not just the label on the pot.
Seasons matter
Most houseplants slow down in winter and need roughly half as much water. Summer growth means more frequent drinks — adjust with the season.
Pot size & drainage
Small pots dry out fast; large pots hold water for days longer. Always use a pot with a drainage hole so excess water can escape.
How often should I water my plant?
There's no single answer — how often you should water depends on the plant species, the light it receives, the season, and the pot size. A pothos in bright summer light might need water every 5–6 days, while the same pothos in a dim winter corner could go 2 weeks between waterings. That's why a fixed "water every Sunday" rule kills so many plants.
This calculator starts from each plant's known light preference and thirstiness, then adjusts for your actual conditions. Succulents, snake plants, and ZZ plants are built to store water and prefer to dry out completely, so their intervals stretch much longer. Ferns, peace lilies, and prayer plants love consistent moisture and get shorter intervals. Use the result as a schedule, then confirm with the finger test before each watering.
Overwatering is the #1 cause of houseplant death. When in doubt, wait a day — a plant recovers from being slightly dry far faster than from soggy, rotting roots.
Still not sure what's wrong with your plant? Ask Thumbs live — type or talk, free during beta.