How to Grow Asplenium Antiquum?

Asplenium Antiquum

Asplenium antiquum, commonly known as the Japanese Bird’s Nest Fern, is a popular houseplant that can add a touch of greenery to any indoor space. It is well-suited for people who want to bring a piece of nature indoors but may be unsure about how to care for these beautiful, delicate ferns.

In this article, we will provide a comprehensive guide on how to grow and maintain Asplenium antiquum indoors, ensuring that your fern thrives and brings beauty to your home for years to come.

In the following sections, we will discuss the ideal growing conditions for Asplenium antiquum, including light, temperature, humidity, soil, and watering requirements, as well as fertilization, planting, propagation, pruning, and common issues that may arise when growing this plant indoors.

Growing Asplenium Antiquum Indoors

Growing Asplenium antiquum indoors offers a unique opportunity to enjoy the beauty and elegance of this fern in the comfort of your home. Its graceful, arching fronds can make a stunning addition to any living space, creating a lush, tropical atmosphere. 

When provided with the right care and conditions, Asplenium antiquum can thrive and flourish indoors, making it a rewarding and captivating houseplant for both beginners and experienced gardeners alike. In this guide, we will explore the essential aspects of growing and maintaining a healthy and vibrant Japanese Bird’s Nest Fern in your indoor space.

japanese bird nest fern
Japanese Bird Nest Fern Source: harum.koh

Growing Conditions for Asplenium Antiquum

Asplenium antiquum is a relatively low-maintenance plant, but to grow it successfully indoors, it’s important to understand and provide the appropriate growing conditions.


Asplenium antiquum thrives in bright, indirect light. Direct sunlight can scorch its delicate fronds, so it’s crucial to place the plant near a window with filtered light, or a few feet away from a window that receives direct sunlight.


Asplenium antiquum prefers a warm and consistent temperature range. The ideal temperature for this fern is between 65°F and 75°F (18°C and 24°C). It can tolerate slightly cooler temperatures during the night, but avoid exposing it to temperatures below 55°F (13°C), as this can lead to stunted growth or damage to the fronds.


This fern thrives in high humidity levels, typically around 50-70%. To maintain adequate humidity levels, you can place the plant on a tray filled with pebbles and water, mist the fronds with water daily, or use a humidifier in the room where the plant is located.


Asplenium antiquum require a well-draining, lightweight, and slightly acidic potting mix. A good mix for this fern would include equal parts peat moss, perlite, and bark or coconut coir. The potting mix should retain moisture without becoming waterlogged, which can lead to root rot.


Water the Asplenium antiquum regularly, keeping the soil consistently moist but not soggy. It is essential to avoid over-watering, as this can lead to root rot. It’s generally better to water the plant more frequently with smaller amounts of water, rather than drenching the soil. Allow the top inch of soil to dry out slightly between waterings.


Fertilize your Asplenium antiquum every 4-6 weeks during the growing season (spring and summer) using a balanced, water-soluble fertilizer diluted to half strength. Avoid over-fertilizing, as this can cause the fronds to yellow and lead to damage to the root system. During the fall and winter months, reduce fertilization to once every 8-10 weeks.

Care and Maintenance

To ensure that your Asplenium antiquum remains healthy and vibrant, it’s essential to understand the proper care and maintenance practices required for this delicate fern. In this section, we will discuss various aspects of care, including planting, propagation, pruning, and addressing common issues that may arise.

Planting and Propagation

Asplenium antiquum can be easily propagated and repotted to accommodate its growth or create new plants.

Choosing the Right Container

Select a container with drainage holes to prevent the potting mix from becoming waterlogged. A shallow, wide pot is ideal, as the fern’s roots tend to spread horizontally. Choose a pot made from materials like terracotta, which can help wick away excess moisture and maintain proper soil aeration.

Propagation Methods

Asplenium antiquum can be propagated using two primary methods: division and spore propagation.


The simplest way to propagate this fern is through division. Carefully remove the parent plant from its pot, and gently separate the root ball into two or more sections, ensuring each section has a healthy root system and several fronds. Replant each division into a new container with fresh potting mix, water thoroughly, and maintain the appropriate growing conditions.

Spore Propagation

Spore propagation is more challenging but can be rewarding. Mature Asplenium antiquum fronds will develop brown, spore-bearing structures called sori on their undersides. Harvest the spores by placing a sheet of paper under the frond and tapping it gently. Sow the spores on the surface of a sterile, damp potting mix in a shallow container.

Cover the container with a plastic wrap to maintain high humidity, and place it in a location with indirect light and consistent temperature. Germination can take several weeks to a few months. Once the sporelings have developed true leaves, transplant them into individual pots and continue to care for them as mature plants.

Pruning Requirements

Regular pruning is not necessary for Asplenium antiquum, but removing dead or damaged fronds can help improve the plant’s appearance and overall health. Use clean, sharp scissors or pruning shears to cut the fronds as close to the base as possible, taking care not to damage healthy growth.

Pests and Diseases

Asplenium antiquum is relatively resistant to pests and diseases. However, common houseplant pests such as aphids, mealybugs, and scale insects can occasionally infest the fern. Check the fronds regularly for signs of infestation, and treat any pests promptly using insecticidal soap or neem oil.

Common Issues

Yellowing or browning fronds may be a sign of over-watering, under-watering, or insufficient humidity. Adjust your watering routine and humidity levels accordingly. Scorched fronds may indicate exposure to direct sunlight, so move your fern to a more suitable location with indirect light.


Asplenium antiquum, or the Japanese Bird’s Nest Fern, is an elegant and low-maintenance houseplant that can enliven any indoor space. To ensure its success, it is essential to provide the right growing conditions, including bright, indirect light, consistent temperatures, high humidity, well-draining soil, and proper watering. 

Additionally, regular care and maintenance, such as planting, propagation, pruning, and addressing common issues, will help keep your fern healthy and vibrant. By following the comprehensive guide outlined in this article, you can enjoy the beauty and grace of the Asplenium antiquum as a long-lasting and captivating addition to your indoor plant collection.

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