How to Grow and Care for Staghorn Ferns

A staghorn fern is an epiphytic plant, which means it grows on other plants or objects for support but is not parasitic. This type of fern is known for its shape, which mimics deer or elk antlers. The fern has two distinct leaf forms: small, flat leaves (known as shield fronds) that cover and protect the root ball structure, and green and pronged antler fronds that emerge from this base and can reach up to 3 feet in length indoors (and larger in the wild). A staghorn fern grows best in warm, very humid conditions, bright, indirect, or dappled sunlight, in a base of organic soil, and it prefers temperatures between 50 and 100 degrees Fahrenheit.

Common Name	Staghorn fern, elkhorn fern
Botanical Name	Platycerium bifurcatum
Family	Polypodiaceae
Plant Type	Fern
Mature Size	2–3 ft. tall, 2–3 ft. wide
Sun Exposure	Partial
Soil Type	Acidic
Hardiness Zones	9–12 (USDA)
Native Area	Asia, Australia

Staghorn Fern Care

• Water frequently and consistently but wait until the base dries out before watering.
• Place the staghorn fern in a humid room (such as a bathroom) or increase humidity around the plant.
• Fertilize monthly to promote healthy growth.
• Do not wipe away the white, dust-like material from the fronds of your fern. This material protects the fern from direct, harsh sunlight and drought.
  

Warning

Staghorn is considered invasive since it naturalizes outdoors in very warm climates. This is a problem in Florida and Hawaii, where you should use care when growing staghorn fern.

Light

Staghorn ferns prefer to be kept in a location that offers consistent but shaded light. They can handle more sunlight if given enough water, warmth, and humidity. Just be cautious about allowing any direct rays to hit the fragile fronds, as they can burn easily.

Soil and Mounting

Though young ferns may be started in a moist traditional potting mixture, staghorn ferns should be mounted once they progress toward maturity. Staghorn ferns are epiphytes, growing on the sides of trees or other plants in the wild, and will therefore thrive in similar conditions in your home. To mount, you'll need a starting lump of peat, compost, moss, or other organic matter to act as the base, but beyond that should not need additional soil.

Mounting is done by securing the fern with its bottom embedded in a lump of peat, compost, moss, or another organic material to a wooden board or bark slab, using a fishing line or wire. The mounted fern can then be hung from the wall. As new fronds grow, they will gradually hide the fastening material as they grow to cover the old fronds. Though it grows slowly, a staghorn fern ends up quite large and impressive once mature. The mass can grow large and heavy and may require remounting on a larger slab.

Tip

Staghorn ferns grow well in hanging baskets. To do so, choose a basket that's a minimum of 14 inches in diameter and line it with moistened sphagnum moss. Plant using a well-draining potting mix and be careful not to let the plant become waterlogged.

Water

Proper watering is an essential component of a staghorn fern's success. They'll need frequent watering, but the base should be allowed to dry out in between—about once a week in warmer climates or during the summer months, and once every two to three weeks in cooler months.

For easy watering, remove your fern and its mounting from the wall (or wherever it's hung) and soak it in a sink filled with water for 10 to 20 minutes, or until the roots are fully saturated. Allow to drip dry before rehanging.

Temperature and Humidity

If there's one thing to remember, it's that staghorn ferns love humidity. Though more mature staghorn can survive briefly freezing temperatures, they thrive in warm, humid conditions. Care should be taken to maintain those conditions (at least above 50 degrees Fahrenheit, and below 100 degrees Fahrenheit), especially when they're young.

To increase the humidity around your plant, try placing it in one of the more naturally humid areas of your home, such as the bathroom or kitchen. If that doesn't work, increase the humidity around the plant by using a small-scale humidifier or spritzing the plant periodically.

Fertilizer

To promote increased growth in your staghorn fern, you can feed it monthly with a well-balanced, water-soluble fertilizer—this is best done during the spring and summer when the fern experiences active growth. Fertilizing frequency can slow to every other month during the fall and winter. For the amount to use, follow product label instructions.

Types of Staghorn Fern

Including Platycerium bifurcatum, there are about 18 other ferns in the Platycerium genus, several of which are also known as staghorn ferns. The other species, however, tend to be more difficult to grow and are usually cultivated only by serious enthusiasts or collectors. Some better-known other species include:

• P. veitchii (silver staghorn or elkhorn fern):This is a smaller, slower-growing fern with blue-green fronds.It is more sun tolerant, and casual growers can sometimes succeed with this plant.
• P. hillii (stiff or green staghorn fern):This is another smaller species, with very broad bright green fronds 2 to 3 feet long.
• P. andinum (American or Blake staghorn fern): Despite the common name, this native of the Amazon has 5-foot-long fronds that are much narrower than other species.
• P. coronarium (crown staghorn fern): This plant produces long, forked, and pendulous leaves that look great from a hanging basket.
  
• P. stemaria (triangle staghorn fern):This very striking staghorn fern produces leaves formed with deep V's that look like layers of draped horns.
  
• P. elephantosis (elephant ear staghorn fern): This staghorn fern grows 4-foot wide ridged leaves.

Propagating Staghorn Fern

Staghorn ferns can be propagated by division. Take these steps.

1. Large, mature staghorn can be easily divided into small "chunks" that include a leaf and a bit of root ball.
2. Plant the sections individually in pots filled with peat and compost.
3. Make sure new divisions are kept warm and moist until they are growing independently.
4. Don't get discouraged if newly-cut divisions take a little time to root (or if it takes a few tries)—propagating ferns takes some practice, and even experienced gardeners don't always find it easy.

Common Pests & Plant Diseases

Staghorn ferns are relatively pest-free on their own but can be afflicted with spider mites, aphids, or mealybugs, especially if nearby houseplants come down with the pests. More frequently, you'll see black spots on a staghorn fern, directly related to too much humidity or traveling spores. To treat the fern, use neem oil or another natural fungicide.

Common Problems With Staghorn Ferns

A staghorn fern's fronds may grow differently and experience varied stages depending on its type. However, here are some common and general issues to be aware of when growing a staghorn fern.

Blackening Fronds

It's challenging to find the right amount of water your staghorn fern prefers. If you notice the fronds have begun to blacken towards the base of the plant, it's likely your plant is being overwatered.

Wilting Frond Tips

If the tips of the fronds begin to wilt, the plant probably needs to be watered more frequently.

Brown Shield Fronds

Shield fronds are the small, flat leaves that cover the root structure. It's normal for shield fronds on the base to turn brown and dry up. Shield fronds should be allowed to remain on the plant.

Brown Growth Underneath the Antler Fronds

If you spot a brownish, velvety material on the underside of longer antler fronds, do not worry and do not remove them. The brown velvety material is normal reproductive sporangia.

From: thespruce