clean air filter indoor houseplants

Boston Fern

Boston Fern (Nephrolepis exaltata “Bostoniensis”)

Boston Fern air purifier

Main Benefits:

Treasured for its lush foliage which reaches a height of 4 feet and a spread of 5 feet, this fern does not grow flowers. It has feathery ferns which are best displayed as a hanging plant.

The Boston Fern is effective at removing formaldehyde and for adding humidity to the indoor environment.


Prefers indirect sunlight; semi-sun.

It must have frequent misting and watering or the leaves will brown and drop.

This plant is prone to spider mites and whitefly which can be controlled using a soapy water spray. Inspect new plants for bugs before bringing them home.

Feed weekly with a weak liquid fertilizer. Feed infrequently in winter; preferably use rain water to keep the soil moist but not soggy.  Water should be room temperature and free of chlorine and fluoride. (Boston ferns are sensitive to water temperature and chemicals). 

Do not touch or move Boston ferns too vigorously: bumping walls, people or pets will cause the leaves to brown.

These ferns prefer an acidic soil with sand and humus. (Buy a pH test kit to make sure your soil is in the right range).

Grows best in soil but this requires constant watering, thus hydroculture is the preferred irrigation method.