Foxtail Fern Care Tips: How to Grow Foxtail Ferns

The foxtail fern (Asparagus densiflorus) is a perennial evergreen houseplant with light green, needle-like leaves or fronds that resembles foxtails. Despite having the common name of foxtail fern, these indoor plants are not true ferns. Previously classified as a member of the lily family, the foxtail fern is actually a member of the asparagus family. Also called plume asparagus, the foxtail fern plant is not edible. Foxtail ferns are commonly mistaken for asparagus ferns, which grow downward whereas foxtail ferns grow upright.

The foxtail fern plant is a feathery, easy-care plant native to South Africa. This hardy, low-maintenance groundcover plant is also known for developing a strong root system. Despite their fragile appearance, foxtail ferns are easy to grow and reach a height and width of approximately three feet.

Consider these general tips for keeping your indoor foxtail fern healthy.

1. 1. Soil: Well-draining soil with a slightly acidic pH level is ideal for your foxtail fern.
2. 2. Spacing: Grow your foxtail ferns a couple of feet away from other plants, as the foxtail fern can be invasive. Foxtail ferns form tubers that spread wide and can suffocate neighboring plants.
3. 3. Watering: Moist soil is vital for foxtail ferns, but let the top layer of soil dry out between waterings. Foxtail ferns have tuberous roots and are drought-tolerant like succulents. The drought-resistant qualities of the foxtail fern mean that it can still thrive with less frequent waterings and occasional misting.
4. 4. Feeding: Fertilizing your foxtail fern is essential. Feeding a foxtail fern plant once per month during the growing season (spring through summer) is sufficient. Use a liquid fertilizer at half-strength and feed your foxtail fern to prevent yellowing leaves and other signs of decay.
5. 5. Temperature: The foxtail fern grows well outdoors year-round in USDA hardiness zones nine through eleven. Be aware that your asparagus fern could become invasive in high-humidity environments like Florida. Growers in colder zones with harsh winter months can easily grow foxtail ferns indoors in hanging baskets or well-draining pots.
6. 6. Light: Aim to give your foxtail fern a mix of bright, indirect light and partial shade. While foxtail ferns can tolerate direct morning sunlight, prolonged full sun or afternoon sun can burn the foliage.
7. 7. Pruning: Prune your foxtail fern to encourage new growth and get rid of dead matter. You may also prune your foxtail fern plant for aesthetic purposes, as it is hardy and can tolerate almost any level of pruning.
8. 8. Repotting: Repot your foxtail fern when it becomes root-bound, or when the roots start growing upwards through the top of the soil. Avoiding repotting your plant in too big of a pot as it might hold excess water and lead to root rot.
9. 9. Pests: Foxtail ferns are fairly resistant to common plant pests. However, your foxtail fern could become infested with spider mites, mealybugs, or scale insects. If an infestation occurs, you might notice the plant yellowing. Use a light insecticide or neem oil to resolve the pest problem.

Whether you choose to grow your plant indoors or outdoors, there are a variety of ways to make use of foxtail ferns.

1. 1. Flower arrangements: If you want a pop of green in a floral arrangement, foxtail fern cuttings make a good addition. Foxtail ferns are known for their longevity and may stay fresh for as long as three weeks.
2. 2. Coastal gardens: If you live in a coastal area, consider growing foxtail ferns in your garden. The foxtail fern is moderately tolerant of salt and can grow well by the sea.
3. 3. Perennial borders: Foxtail ferns make excellent ornamental plants for your outdoor or indoor garden, and they create a particularly attractive perennial border for more lushly flowering plants.
4. 4. Attracting pollinators: The flowers of the foxtail fern attract pollinators like butterflies and bees.

The foxtail fern is poisonous to both pets and humans. The foxtail fern’s red berries and white flowers are toxic if ingested. In addition, the foxtail fern may cause irritation if it comes into contact with the skin. Keep children and pets away from foxtail ferns in your home and garden.

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