Boston Fern
Nephrolepis exaltata
Lush, feathery fronds that need genuinely humid air to thrive - the honest reason so many Boston Ferns end up looking crispy by their second month.
Photo: Nanda Green / Unsplash What this plant actually wants.
Best window: East or bright north, in a naturally humid room like a bathroom if possible.
This is the general recommendation. When you map your actual windows in Planterra, the app compares each one against this plant's lux range and tells you which of your specific spots are best - accounting for depth from the glass, obstructions, and how the light shifts by season.
What usually goes wrong.
Crispy, browning fronds
Almost always low humidity - the most common reason Boston Ferns struggle indoors. Use a humidifier, a pebble tray, or move it to a naturally humid bathroom with enough light.
Yellowing fronds
Inconsistent watering, either too dry or waterlogged. Aim for evenly moist soil at all times rather than a dry-then-drench cycle.
Fronds dropping small leaflets
A stress response, usually to a sudden change in temperature, light, or humidity. Keep its environment as stable as possible.
Sparse, thin growth
Not enough indirect light or nutrients. Check it isn't in too dark a corner, and feed lightly during the growing season.
Boston Fern is the plant I'm most honest about upfront: if you can't offer real humidity, this isn't the easy beginner fern people expect. I check the room's humidity before I check anything else on the patient card.
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