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Boston fern care

Nephrolepis exaltata

Thirsty’s starting schedule for Boston fern: about every 3 days. Check the soil and adjust it to your home.

Watering

Keep the soil evenly moist but not saturated and never let it dry out. Water less in winter, when overwatering can lead to root rot. [1][2]

Light

Bright, indirect or medium-bright light, such as an east window, out of direct sun. [1][2]

Humidity

Needs high humidity; a kitchen, a bathroom or a tray of wet pebbles helps, and dry indoor air can brown the leaflet tips. [1][2]

Soil and potting

A well-drained mix that still holds moisture, such as peat with vermiculite. [2]

Pets

Non-toxic to cats and dogs. [3]

Sources

1. NC State Extension: Bostonfern - Nephrolepis exaltata
2. University of Wisconsin-Madison Extension (Wisconsin Horticulture): Boston Fern, Nephrolepis exaltata var. Bostoniensis
3. ASPCA: Toxic and Non-toxic Plants: Boston Fern

This page summarizes the sources above; follow them for the full picture. Light, pot, soil and season all change how fast a plant dries out, so check the soil before you water. Last reviewed October 9, 2026.