Fernery or fernerium

A collection of ferns in a terrarium is often referred to as a “fernery” or “fernerium.” These terms specifically describe a terrarium that is primarily dedicated to cultivating various species of ferns. Ferns thrive in humid environments, making them well-suited for terrariums where humidity and temperature can be controlled to create ideal growing conditions.

Creating a Fernery

If you are interested in setting up a fernery, here are some steps and tips to help you get started:

Choose a container that provides ample space for your ferns to grow. Glass containers, such as aquariums, glass jars, or specially designed terrariums, are ideal.

A lid helps maintain humidity, which is crucial for ferns. However, ensure there is some ventilation to prevent mold growth.

Add a layer of small pebbles or expanded clay pellets at the bottom to facilitate drainage and prevent waterlogging. Next add a thin layer of activated charcoal helps keep the terrarium fresh by absorbing odors and preventing mold.

Best to use a well-draining, organic-rich soil mix. A blend of potting soil, peat moss, and perlite works well for ferns.

Choose a variety of ferns that thrive in similar conditions. Some popular choices include Maidenhair Fern (Adiantum), Bird’s Nest Fern (Asplenium nidus), and Boston Fern (Nephrolepis exaltata). Arrange the ferns in the terrarium, ensuring they have enough space to grow. Plant taller ferns at the back and smaller ones at the front for a layered effect.

Maintain high humidity levels by misting the terrarium regularly. Using a humidity gauge can help you monitor the levels. Water the ferns regularly but avoid overwatering. The substrate should be moist but not soggy.

Positioning your creation, place the terrarium in a location with bright, indirect light. Avoid direct sunlight, which can overheat the terrarium and damage the ferns. 60-75°F (15-24°C) is an ideal temperature for most ferns

Trim dead or yellowing fronds to keep the terrarium looking neat and to prevent disease.

Inspect the ferns regularly for pests such as aphids or mites. If pests are found, treat them promptly with appropriate methods.

Feed the ferns with a diluted, balanced liquid fertilizer during the growing season, typically once a month. This will add lush greenery and a serene, natural beauty to any space. They are also known for their air-purifying properties, helping to improve indoor air quality. The presence of ferns can help increase humidity levels in the surrounding environment, which can be beneficial for other plants and your home’s overall air quality.

Creating a fernery allows you to enjoy the beauty and tranquillity of ferns within a controlled, miniature ecosystem. With proper care and maintenance, a fernery can be a stunning and low-maintenance addition to your home or office.