basic

Plant Watering Frequency by Pot Size Calculator

days_between_water = base_days · pot_size_factor · season_factor.

Estimate days between watering for a potted houseplant from the pot diameter (larger pots dry out more slowly) and the season factor (1.0 spring/fall, 0.7 hot summer, 1.5 winter). Base interval defaults to 5 days for an average tropical houseplant; tweak for cacti / ferns / etc.

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

days
in

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

days = base · (pot_in / 6) · season_factor.

In depth

Estimate days between watering for a potted houseplant from the pot diameter (larger pots dry out more slowly) and the season factor (1.0 spring/fall, 0.7 hot summer, 1.5 winter). Base interval defaults to 5 days for an average tropical houseplant; tweak for cacti / ferns / etc.