Boston Fern Plant Care

Boston Fern (Nephrolepis exaltata) belongs to the Nephrolepidaceae family within the Nephrolepis genus. Boston Fern is native to Northern South America through Mexico, Florida and the West Indies. Boston Fern is also known as Sword fern, Fishbone fern.

Boston Fern displays a compact, upright growth habit, reaching up to 3 inches tall with a spread of approximately 4 inches. Boston Fern produces does not flower. reproduces through spores on the undersides of its leaves.

Leaf size: approximately 24 inches.

Nephrolepis exaltata requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Boston Fern thrives in bright indirect light conditions. The optimal light range is 100–500 lux. Avoid placing Boston Fern in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Nephrolepis exaltata grows best at temperatures between 60°F and 75°F. Boston Fern prefers humidity levels of 50–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining soil mix. Good drainage is essential for Boston Fern to prevent waterlogging, which leads to root rot and fungal issues.

Repot every 1-2 years in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.

Boston Fern can be propagated through division of root ball or spores. Similar propagation techniques also apply to lemon button fern plant care, which shares the same genus.

Boston Fern is susceptible to spider mites, mealybugs, scale insects. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Boston Fern grows outdoors in USDA Zone 9a – 11b. Native to Northern South America through Mexico, Florida and the West Indies, Boston Fern is adapted to warm climates. In cooler regions, grow Boston Fern as a houseplant or bring it indoors before the first frost.