Plant guide
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Watering rhythm
Every 3–5 days
The Boston Fern is a tropical fern native to the Americas. Its delicate, feathery fronds cascade elegantly downward, bringing a fresh, airy quality to any indoor space. While it does prefer humidity and isn't fond of dry air, it's quite manageable for beginners when given the right care—and it's a popular choice for good reason.
Bright indirect light works best. Avoid direct sun. Keep temperatures between 15–25°C (59–77°F), and try not to let it drop below 10°C (50°F). Humidity of 50% or higher is ideal; if you can maintain 60% or more, your fern will really thrive.
Light and temperature change a plant's metabolism, so the ideal cadence shifts with the seasons.
Spring
Every 2–4 days
Summer
Every 2–3 days
Autumn
Every 3–5 days
Winter
Every 5–7 days
Water when the soil surface begins to dry out. A quick finger test helps—when there's no moisture, water thoroughly until it drains from the bottom. Boston Ferns like to stay slightly moist, but be careful not to overwater, as that invites root rot. Regular misting of the foliage is a lovely bonus that keeps the plant happier and healthier.
Quick lookup from symptom to likely cause and action.
| Symptom | Likely cause | What to try |
|---|---|---|
| Leaves turn brown and become crispy | The air is too dry, or watering has been insufficient. | Mist the foliage daily to raise humidity levels. Check how quickly the soil is drying and increase watering frequency as needed. |
| A musty, rotting smell comes from the base | Overwatering or poor drainage has caused the roots to rot. | Reduce how often you water and make sure the drainage hole isn't blocked. If it's severe, repot the plant and trim away any rotted roots. |
| Leaves turn yellow and drop | The plant may be getting too much direct sun or the temperature is too cold. | Move it to a spot with bright, indirect light. Check that the temperature stays above 15°C (59°F), and relocate to a warmer area if needed. |
| Tiny bugs are visible, or leaves turn white | Spider mites or scale insects have infested the plant. Low humidity makes this more likely. | Increase humidity with regular misting. If the infestation is mild, rinse the leaves with water. For heavier infestations, use an insecticidal spray. |
| No new leaves appear and growth has stalled | Light levels are too low or temperatures are too cold for healthy growth. | Move the plant to a brighter location and maintain temperatures above 15°C (59°F). During spring and summer, feeding with diluted liquid fertilizer can help too. |
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