How Often to Water a Boston Fern
Nephrolepis exaltata · Difficulty: Moderate
Care Snapshot
| Light | Medium indirect light |
|---|---|
| Soil | Moisture-retentive, peat-based potting mix |
| Humidity | Needs high humidity (50%+) to thrive |
| Temperature | 16-24°C (60-75°F) |
Want a personalized schedule based on your pot size and light? Try the free watering calculator.
Signs of Overwatering
Black, mushy fronds at the base and a sour smell from the soil indicate overwatering, though this fern is far more often killed by underwatering and low humidity than by too much water.
Signs of Underwatering
Crispy, browning fronds that shed heavily are the most common problem with Boston ferns, usually caused by dry air rather than a missed watering.
Adjusting for the Seasons
This is one of the thirstiest common houseplants - the soil should stay lightly moist at all times, so check it every few days rather than on a long weekly schedule.
Pro Tip
Pair a consistent watering routine with a humidifier or pebble tray - dry air undoes even perfect watering habits with this plant.
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