Boston fern (Nephrolepis exaltata`Bostoniensis’)

Boston Fern Care

Of all the ferns suitable for indoor growing, the Boston fern (Nephrolepis exaltata ‘Bostoniensis’) is one of the easiest to grow successfully. Unlike other ferns that struggle in the dry air common to many homes, the Boston fern thrives. This plant is not only resilient but also one of the best choices for improving indoor air quality. With its ruffled, sword-like lime-green fronds, Boston fern creates a striking display in a hanging basket or cascading from a high perch like a bookcase or shelf. Popularized during the Victorian era, this plant was a staple in home decor.

To care for Boston fern successfully, keep the following growing tips in mind:

Lighting

Boston ferns thrive in medium, indirect light. Place them near an unobstructed northern window or in an east-facing window that receives morning light. Avoid south or west-facing windows, as the intense light can scorch the fern’s delicate fronds.

Temperature

Boston fern prefers a daytime temperature between 65-75°F, with about 10 degrees cooler at night. Higher temperatures may be tolerated but will require more frequent watering. Prolonged exposure to temperatures below 65°F can stunt growth.

Watering

Boston ferns need to stay evenly moist but not waterlogged. Avoid letting the plant dry out completely, as this can lead to brown, crispy fronds. Overwatering, however, can cause yellowing and root rot.

Humidity

While Boston ferns can adapt to average home humidity, they thrive with added moisture. If you live in a dry climate, mist the plant daily or place it near other houseplants to increase humidity.

Soil

Plant Boston ferns in rich, organic soil with plenty of compost. Repot yearly using organic potting soil that is 50% peat moss and contains compost. Adding vermicompost can also enhance soil richness.

Fertilizing

Feed Boston ferns monthly from April through October using an all-purpose organic fertilizer. This will keep the plant lush and encourage new fronds.

Pest Control

Boston ferns are generally pest-resistant, but occasional infestations of mealybugs, mites, or scale insects may occur. Treat mealybugs by applying isopropyl alcohol, then rinse the plant. Misting can deter mites, which thrive in dry conditions. Scale insects can be managed by removing affected fronds or applying neem oil.

Following these tips will help you enjoy a beautiful, healthy Boston fern indoors.