Pteridium aquilinum
SPECIMEN · FROM THE LIBRARY
Pteridium aquilinum

Pteridium Aquilinum

Photo · (c) c michael hogan, some rights reserved (CC BY-NC-SA), uploaded by c michael hogan COURTESY INATURALIST
ON THIS PLANT

Pteridium aquilinum (bracken, brake or common bracken), also known as eagle fern, is a species of fern occurring in temperate and subtropical regions in both hemispheres. Originally native to Eurasia and North America, the extreme lightness of its spores has led to it achieving a cosmopolitan distribution.

THE NAME

The name "bracken" is derived from Old Norse and is related to the Swedish word "bräken" and the Danish word "bregne," both of which mean "fern." While brackenfern is used as a vegetable in countries like Japan and Korea, it was first discovered by Western countries, which is why it is called "western brackenfern."

A note from PlantMom

Braken fern is generally resistant to disease and is affected by relatively few insect pests. Its care is considered difficult because it needs a consistently moist environment and frequent watering. However, its roots can rot if overwatered or if the surroundings lack adequate ventilation. It is best suited to people with some growing experience, since most individuals can keep it alive for a limited period. Still, it may struggle to thrive, with leaves drying out and declining in health over time.

— PlantMom
CARE GUIDE

How to keep Pteridium Aquilinum.

Light

Showing adaptability to a range of light conditions, the braken fern does best with periods of sun alternating with shade. Although it can tolerate constant sun or continuous shade, a mix of both encourages healthier growth. An imbalance in sun exposure can reduce the fern’s vigor.

Water

The Western brackenfern is a versatile plant that thrives in a variety of climates, exhibiting resilience in both wet and dry environments. Although it prefers consistent moisture, it is also drought-tolerant and only needs watering twice a week. It grows best in dappled light and, as an outdoor fern, benefits from natural rainfall.

Humidity

This plant prefers dry conditions, so don't mist it. However, watering it less often can also thrive in higher humidity.

Temperature

The braken fern favors a temperature range of 32℉ to 90℉ (0℃ to 32℃) and is native to a growth environment with cool to mild temperatures. In winter, when the temperature falls below freezing, it can adjust by entering dormancy, whereas in spring and summer it grows actively within its preferred temperature range.

Fertilizer

To promote healthy growth in Western brackenfern, apply a high-nitrogen fertilizer twice a year: once in the spring and again in late summer. Ensure you use moderate amounts to avoid causing root burn. Tailor the fertilization to the plant's lifecycle, giving more fertilizer to juvenile ferns. Additionally, incorporate organic matter into the soil and use slow-release fertilizer formulas to encourage healthy growth and minimize the risk of chemical shock.

Pruning

The Western brackenfern is a fast-growing plant known for its spreading fronds. To manage its growth effectively, prune it in early spring. This will help remove dead fronds and encourage the development of new shoots. Regular pruning not only prevents the fern from becoming invasive but also promotes a healthier and more appealing plant. By allowing more light to penetrate and reducing overcrowding, you can ensure your brackenfern thrives.

Pot & Repot

When repotting Braken fern, pick a pot 1–2 inches (2.5–5.1 cm) larger that has good drainage. Use a well-draining potting mix. Repot in spring or fall, making sure the root ball is slightly lower than the rim of the flower pot. Water thoroughly after repotting and place the pot in a warm spot with indirect sunlight.

CHARACTERISTICS

Botanical profile.

Plant Type
Fern
Life Cycle
Perennial
Genus
Pteridium
Family
Dennstaedtiaceae
Hardiness Zone
3-8
Mature Height
30 cm to 91 cm
Mature Spread
91 cm
Leaf Color
Green
Leaf Type
Deciduous
Planting Time
Spring, Summer
Harvest Time
Mid summer, Late summer, Early fall
Native Area
Sri Lanka, Belize, India, Turkey, Sweden, Mexico, Guatemala, Slovakia, Madagascar, Pakistan, Slovenia, Croatia, Fiji, Belarus, Uganda, Tanzania, Germany, Paraguay, Sierra Leone, Indonesia, Cameroon, Koppen, Ethiopia, Romania, Suriname, Latvia, Belgium, Moldova, Netherlands, Portugal, Malawi, Honduras, Peru, Philippines, Bulgaria, Cyprus, Panama, Ukraine, New Zealand, China, Colombia, Afghanistan, Italy, Japan, Finland, Bosnia and Herzegovina, El Salvador, Iran, Ecuador, Costa Rica, Congo (DRC), Austria, Rwanda, Kenya, Zimbabwe, Russia, Uruguay, Iraq, Cuba, Argentina, Equatorial Guinea, Burundi, Venezuela, Estonia, Brazil, Ghana, South Korea, France, Czech Republic, South Africa, Sudan, Zambia, Poland, Greece, Guinea, Trinidad and Tobago, North Macedonia, Serbia, Lithuania, Norway, Spain, Switzerland, Bolivia, Vietnam, Denmark, Israel, Guyana, Bhutan, Nicaragua, Albania, Ireland, United Kingdom, Hungary, Thailand, Gabon
ALSO KNOWN AS

Other names.

en Northern bracken fern en Bracken en Brackenfern en Brake en Western Brackenfern en Common Bracken en Fern en Braken Fern en Eagle Fern en Western Bracken Fern en Common Brackenfern en Ferigi (romanian)
FREQUENTLY ASKED

Reader questions.

If I give my Western brackenfern too much or too little water, what should I do?

The Western brackenfern, despite its love for water, can actually be overwatered. This is most likely to happen if the plant sits in stagnant water or if the planter lacks drainage holes. These conditions create excessive moisture, preventing the roots from absorbing nutrients and moisture properly. Additionally, an overly moist environment can lead to fungal or bacterial diseases. The initial signs of overwatering are wilted and yellow leaves, followed by drooping or soft and mushy stems. However, it's important to consider other potential causes for the plant's symptoms since it's difficult to overwater this plant. On the other hand, underwatering the Western brackenfern is a common problem. Unless using a self-watering planter, fern owners often inadvertently let the plant become too dry. In dry conditions, the plant's appearance can quickly change from lush and green to brown and crispy. In severe cases, it may seem like the plant has completely dried up with no living fronds remaining. However, if some of the roots are still healthy, there may still be a chance to save the plant. To do so, remove all the dry and dead stems, thoroughly water the plant, and return it to its usual spot. With proper care, the plant can surprisingly recover and produce new fronds, although it may take several months to regain its previous size.

Why should I put fertilizer on my Western brackenfern?

Fertilizing Western brackenfern is necessary for a few reasons. First, it supplies your plant with the necessary nutrients for healthy new growth. Second, these additional nutrients help maintain the overall health of the plant, and can even enhance its ability to resist diseases and pests.

What are the sunlight requirements for Western brackenfern?

Western brackenfern needs a balanced exposure of sunlight and shade to thrive optimally. It can tolerate both full sun and full shade conditions, with full sun referring to more than 6 hours of sunlight per day and partial sun being about 3-6 hours. However, a mix of light and shade throughout the day is ideal for healthier growth. It's crucial to observe how sunlight moves through your garden and choose planting spots accordingly to ensure the plants' happiness and balance.

What is the preferred temperature range for Western brackenfern?

The Western brackenfern, scientifically known as Pteridium aquilinum, thrives in a temperature range of 32°F to 90°F (0°C to 32°C). This plant is native to regions with cool to mild temperatures and exhibits strong cold resistance. It is well-adapted to active growth in spring and summer within its preferred temperature range. In winter, the fern can go dormant when temperatures fall below freezing, thus not requiring special frost protection measures under normal winter conditions. However, to prepare for winter's freeze, it's beneficial to water the plant abundantly before the first frost to ensure the soil remains moist, aiding in drought and water scarcity prevention during the colder months.

How do I water my Western brackenfern correctly?

Your Western brackenfern thrives in consistently moist soil, similar to its natural habitat. This means you may need to water it every one or two days. It's important to avoid letting the plant dry out. As soon as you notice the top layer of soil becoming slightly dry, it's time to water again. Ensure thorough watering by soaking the soil completely until water drains from the bottom of the pot. Afterward, be sure to remove any excess water to prevent the pot from sitting in a puddle. This method is highly effective in maintaining adequate moisture in the soil.

When should I fertilize my Western brackenfern?

The feeding schedule of Western brackenfern depends on its location. It is not a very hungry plant, but it does need some extra nutrients. Outdoor plants should be fertilized once in the spring, while indoor ones should be fed monthly from spring to summer.

How does artificial lighting benefit indoor plants like Western brackenfern?

Artificial lighting is crucial for indoor plants' growth, especially when natural sunlight is insufficient, like in winter or less sunny spaces. LED lights are a popular artificial lighting choice, providing necessary wavelengths for plant growth. Full sun plants require 30-50W/sq ft, partial sun 20-30W/sq ft, and full shade 10-20W/sq ft of artificial light. The light source should be placed 12-36 inches above the plant to mimic natural sunlight, and plants typically need 8-12 hours of light per day to emulate natural daylight hours effectively.

How does low temperature affect Western brackenfern and what are the solutions?

Western brackenfern is cold-tolerant, thriving best in temperatures above its minimum suitable growth temperature. Although it can generally weather winters above its tolerable growing temperature minimum, temperatures falling below a certain limit (not specified in the provided information) may not show immediate adverse effects but can lead to decreased sprouting or no sprouting in the following spring. The recommended solution for any parts of the plant that fail to sprout in the spring due to low winter temperatures is to remove those parts to allow for the emergence of new growth.

What do I need to think about when watering my Western brackenfern?

To determine how often to water your Western brackenfern, pay attention to the humidity levels in the air. Higher humidity means less frequent watering since evaporation is slower. Avoid placing the plant near heating or cooling vents as it will dry out quickly. Instead, choose a draft-free location. These ferns thrive in dappled and indirect sunlight with temperatures ranging from 55-80 degrees F (13-27 degrees C). Placing them on a warm and sunny windowsill may cause dehydration. If possible, use rainwater or distilled water for this plant. Tap water works fine in most areas, but the minerals and chemicals could result in brown leaf tips since the leaves are delicate. Western brackenfern may struggle in small pots since they dry out quickly due to the limited amount of potting medium. Providing more space in the pot is recommended. Consider using a self-watering planter for this fern. This type of pot has a wicking system that continuously supplies water to the soil from a central reservoir. This ensures a consistently moist environment for the plant's roots. Not only does this eliminate the need for frequent watering, but it also benefits the roots by maintaining a steady water supply.

When is it not a good idea to add fertilizer to my Western brackenfern?

To ensure optimal growth for Western brackenfern, it is important to consider the timing of fertilizer application. Avoid fertilizing after early autumn, as this may lead to excessive growth just before winter. Additionally, refrain from fertilizing during hot and dry periods, as dry soil does not effectively deliver fertilizer, and stimulating growth during this time may require more water than available. Instead, it is best to apply fertilizer earlier in the season when temperatures are cooler. Lastly, be cautious of inadvertently providing double-dose of fertilizer to Western brackenfern by considering the absorption of nearby plant or lawn fertilizers.

What are the signs of improper light exposure in Western brackenfern?

Western brackenfern shows several symptoms when it's not getting the right amount of light. With too little light, it may exhibit slower or no new growth as it enters a survival mode. Chlorosis, or yellowing leaves, indicates excessive sunlight or possibly other issues affecting chlorophyll and photosynthesis. Sunscald, leaf curling, wilting, and leaf scorching are other symptoms of light-related stress, often due to too much direct sunlight leading to damaged tissues, reduced photosynthesis, and dehydration.

What are the effects of high temperature on Western brackenfern and how can they be mitigated?

High temperatures during summer can adversely affect Western brackenfern, especially when exceeding its maximum tolerable growing temperature. Symptoms of heat stress include leaves becoming lighter in color, prone to curling, and susceptible to sunburn. To mitigate these effects, it's advisable to trim away sunburned and dried-up parts of the plant. Moving the plant to a location that provides shade during the midday and afternoon sun, or employing a shade cloth, can protect it from excessive sun exposure. Additionally, watering the plant in the morning and evening helps keep the soil moist and supports plant health during hot weather.

ALSO IN THE LIBRARY

You might also like.