Watering Schedule Calculator
Enter your plant type, pot size, and indoor conditions. Get a precise watering frequency tailored to your specific setup — no guesswork required.
Example Output
Get Your Custom Watering Schedule
Fill in the details below. The calculator accounts for plant type, pot size, light level, season, and indoor humidity.
Three Steps to a Precise Schedule
Enter Plant Details
Select your plant species, pot diameter, soil type, and current light conditions from the calculator above.
Adjust for Environment
The algorithm factors in indoor humidity, seasonal growth cycles, and drainage speed to refine the baseline schedule.
Follow the Schedule
Receive your watering frequency, volume per session, and a practical tip. Copy results to your notes app in one click.
Plant Care Guides
How to Build a Year-Round Watering Schedule for Indoor Plants
Seasonal shifts change how much water your plants need. Here is how to stay ahead of those changes.
Read →
Understanding Light Requirements: Why Placement Matters More Than You Think
A few feet of distance from a window can cut available light by 70 percent. Learn how to measure and match light to your plants.
Read →
Choosing the Right Soil Mix: A Practical Guide for Common Houseplants
The soil you choose affects drainage, aeration, and nutrient availability. This guide cuts through the confusion.
Read →What Plant Owners Say
"I had been overwatering my fiddle leaf fig for months. SoilCheck's calculator gave me a 9-day schedule and the problem cleared up within two weeks."
"The seasonal adjustment feature is genuinely useful. I use the copy button to paste the results directly into my reminder app every season."
"Straightforward and fast. The diagnostic tool on the second page helped me identify a root rot issue before it became irreversible. Solid resource."
Frequently Asked Questions
How does the calculator determine watering frequency?
The tool uses a base evaporation rate per plant type, then adjusts for pot volume, light intensity, ambient humidity, season, and soil drainage speed. The result is a personalised interval in days.
Does pot material affect the schedule?
Yes. Terracotta pots lose moisture through their walls faster than plastic or glazed ceramic. If you use terracotta, reduce the calculated interval by 1–2 days as a starting point.
What if my plant is not listed?
Choose the species closest to yours in water needs. Tropical foliage plants are similar to Pothos; slow-growing succulents behave like the succulent/cactus option. The diagnostic tool can help narrow this down.
Should I water less in winter?
Most houseplants grow more slowly in winter and require 25–40 percent less water. The calculator applies a seasonal multiplier automatically when you select Winter in the season field.
How precise is the water volume recommendation?
The volume estimate is a guideline based on pot diameter and drainage speed. The goal is to wet the entire root zone without leaving standing water. Always empty saucers within 30 minutes of watering.
Is SoilCheck free to use?
Both tools — the watering calculator and the plant diagnostic tool — are completely free. No account, subscription, or payment of any kind is required.