Care guide · moderate care
How to care for Boston Fern
Nephrolepis exaltata
Written by Benjamin — a plant parent, not a search engine.
How often should I water Boston Fern, and what light does it need?
Boston ferns want moist soil and humid air — bathrooms and kitchens love them. They'll forgive a missed week only if you don't make a habit of it. Water it every 3–5 days while it is growing and every 6–9 days in winter, always checking the soil first. Give it medium light. It is non-toxic to cats and dogs — more detail below.
Last updated August 14, 2026
At a glance
- Watering style
- evenly moist
- 3–5 days growing · 6–9 days winter
- Light
- Medium light
- Humidity
- high
- Pet safety
- Non-toxic to pets
The short version
The one-sentence rule
Never let it fully dry out. Fronds that crisp at the tips are begging for water or humidity.
Light, made concrete
What medium light actually means
Medium light — a meter or two from a north or east window, bright but no harsh sun. The sweet spot for most common houseplants.
Pet safety
Is Boston Fern toxic to cats or dogs?
No — Non-toxic to pets. It is not considered toxic to pets, but any plant can upset a sensitive stomach, so it is still not a salad bar.
Good to know
Who this plant is for
- ✓bathrooms
- ✓hanging baskets
- ✓humidity lovers
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