How Often to Water Houseplants: Check the Soil, Do Not Schedule
There is no right number of days. Check the soil on a range of days set by plant, light, pot, and season, and water only when the right depth is dry.
Published by ThriveThyme
houseplants watering indoors winter
How Often to Water Houseplants
There is no fixed number of days. Overwatering is the most common way houseplants die, and a calendar reminder that says "water today" is how it happens. Illinois Extension and University of Missouri Extension both say the same thing: water when the soil tells you to, not on a timer.
What a schedule can do is tell you when to check. Use the Light and Water tool to get a check range for your plant, window, pot, and season.
How to Check
- Finger test. Push a finger into the soil to the first knuckle, about an inch. Dry and crumbly means that layer is dry. Cool or damp means wait.
- Skewer test. For deeper checks in big pots, push in a wooden skewer and pull it out. Clean means dry. Dark soil stuck to it means wet.
- Weight test. Lift the pot right after a full watering and remember the weight. A pot that feels much lighter is drying out.
How Dry Is Dry Enough
| Care group | Water when | Examples |
|---|---|---|
| Evenly moist | Top inch is dry | Boston fern, calathea, peace lily, African violet |
| Top inch dry | Top inch is dry | Pothos, philodendron, monstera, spider plant |
| Half dry | Top half of the pot is dry | Dracaena, peperomia, hoya, moth orchid |
| Fully dry | Dry all the way down | Snake plant, ZZ, jade, aloe, cacti |
What Changes the Timing
- Light. More light means faster drying. A plant across the room from a north window may go twice as long as one on a south sill.
- Pot. Unglazed terracotta breathes and dries faster than plastic or glazed pots. Self-watering pots keep soil wet; let the reservoir run empty for a few days before refilling.
- Season. Short, cool winter days slow growth. The same plant often needs water half as often in January as in July.
- Pot size and mix. Small pots and gritty mixes dry fast. Big pots and peat-heavy mixes hold water.
How to Water
Water slowly until it runs out the drainage hole, then empty the saucer after 15 to 30 minutes. Pots without a drainage hole make overwatering very easy. Use room temperature water.
Signs You Are Overwatering
- Yellow lower leaves while the soil is still damp
- Soft, mushy stems or a sour smell from the soil
- Fungus gnats flying from the pot
- Wilting even though the soil is wet. Rotting roots cannot take up water.
Next Steps
- Look up your plant in the houseplant care table.
- Add it to My houseplants on the Houseplants page and press Watered today. You get a check due badge, not a water order.
- Read houseplant light by window direction.