Orchid Cactus Care: A Simple Guide for Healthy Growth

In this guide, I’ll share my top tips on orchid cactus (Epiphyllum) plant care at home. I love growing these plants for their bright color and pleasant fragrance. The trick to successful orchid cactus care lies in finding the optimal balance of light and water. With the right light exposure, adequate humidity, and well-draining soil, the orchid cactus will beautify your home for years.

Key Takeaways:

Scientific Name:	Epiphyllum
Common Names:	Orchid cactus, climbing cactus, and leaf cactus.
Native Range:	Central America and Northern South America.
Soil:	Well-draining cactus or succulent mix with plenty of organic matter; prefers slightly acidic pH.
Light:	Bright, indirect light throughout the day.
Watering:	Water thoroughly when the top half of the soil is dry.
Temperature:	The ideal range is between 50-85°F (10-30°C). It won’t tolerate very cold temperatures.
Fertilizing:	Feed with a balanced liquid fertilizer diluted to half strength once a month during the growing season (spring and summer)
Pruning:	Prune to maintain desired size and shape in spring.
Pests:	Common pests include aphids, mealybugs, and scale insects which can be managed with regular cleaning, appropriate watering, and the use of insecticidal soaps or neem oil.
Toxicity:	Non-toxic to pets and humans, though I’d keep it away from eager pets and small children.

How to Grow Orchid Cactus at Home

How big do Orchid Cactus grow?

If you’re growing an Epiphyllum at home, what should you expect? The orchid cactus grows at a moderate rate.

The cactus’s stems reach 18 to 30 inches long when grown indoors. In nature, however, these plants can grow up to 10 feet long and three feet wide.

It may take up to five years before an orchid cactus flowers. Usually, they’re also more likely to bloom if their roots fill the pot or they’re root-bound—usually, a plant growing in a four-inch pot blooms before a plant growing in an eight-inch pot.

What to do Before Planting

Choose a pot or planter on the smaller side when planting an orchid cactus. Containers must have drainage.

Try not to plant while blooming. Wait until at least a month after the flowers die.

A hanging basket is an excellent choice for the plant’s long stems. If you’re not hanging your Epiphyllum, place its container on a gravel-filled tray. Keep the tray almost topped with water to improve humidity.

Best Soil Types

In nature, orchid cacti usually grow on trees. Mimic these conditions by choosing a soil mix that holds moisture but drains quickly. Consider three parts potting soil to one part pumice or perlite or half peat moss-based potting soil to one part perlite.

As for pH levels, aim at the acidic side: A pH of six is ideal.

You’ll also find plenty of pre-mixed orchid and succulent soils (via Amazon), which in my experience, work well with orchid cactus plants.

How to Plant

When potting an orchid cactus, partially fill your chosen container with moist, well-draining soil. Gently place the plant in the pot.

Fill the sides loosely to the original soil level. Tamp the soil gently. Keep the newly planted Epiphyllum moist.

When planting a cutting, let them harden for one week before you plant. Place the cutting, growing end down into the soil. Don’t place more than two leaf serrations under the soil.

Put the container in a location with bright but indirect light. Keep the soil moist by misting regularly. The cutting should root in three to six weeks.

Light Preferences

Orchid cacti thrive in filtered light, such as in their natural rainforest habitat. A spot that receives sunlight in the morning but is sheltered in the afternoon is ideal.

Never expose your Epiphyllum to the full afternoon sun. Usually, a south or west-facing exposure is preferable.

You may notice leggy or weak growth if your plant isn’t getting enough light. Yellow or wilted growth is an indication of too much exposure. With the right amount of light, your plant should have light- to dark-green stems with a slight red tinge at the edges.

Over the winter, place your plant in a room where the lights aren’t turned on after daylight. Exposure to artificial lights during the winter months may affect flowering in the future.

Temperature & Humidity Preferences

Most of the year, orchid cacti prefer temperatures between 65 and 75 degrees Fahrenheit. In winter, however, they need to experience around eight to 10 weeks of cooler temperatures to flower.

During this cool period, temperatures should be between 60 to 65 degrees Fahrenheit during the day. At night, temperatures should be between 45 to 55 degrees Fahrenheit.

The orchid cactus thrives in moderate humidity. Indoors, this means from about 40 to 50 percent. You can boost humidity by placing the pot on a tray of wet rocks.

Orchid Cactus (Epiphyllum) Care

Watering

Overwatering is the greatest threat to a healthy orchid cactus. Never let your plant stand in water. However, you do need to ensure their roots never dry out.

From mid-spring through summer, water when the top third of the soil feels slightly damp. During the winter, the plant requires less moisture. Water sparingly during these periods of inactivity.

Use bottled or de-mineralized water, as opposed to tap water.

Fertilizing

During periods of growth — from spring through fall — apply a 10-10-10 fertilizer or pre-mixed orchid fertilizer (via Amazon) every two weeks. Don’t use a fertilizer that has more than 10 percent nitrogen content.

At the end of February and October, apply a 2-10-10 fertilizer. This will encourage flowering.

Over the winter, take a break from fertilizing as the nutrient overload is too much for the plant during periods of natural dormancy.

Pruning

The only reason to prune an orchid cactus is to control its size. If you want to prune, do it right after the plant stops flowering.

When cutting stems, use clean, sharp shears. This will help prevent tearing. Be especially careful not to overwater after pruning.

Propagating

If you prune your plant, keep the cuttings. This is the easiest way to propagate an orchid cactus.

To propagate, cut a stem cleanly off. Allow the end to form a callus (harden) for a week. Then push the growing end into clean, moist soil.

No more than two leaf serrations should be under the soil. Place the pot in a bright but shaded spot and water or mist regularly. The cutting will take about three to six weeks to develop roots.

Repotting

Opinions on how often to repot orchid cacti vary from every two to seven years (I usually find they need repotting every three years or so). When you do choose to repot, move just one container size larger. (Orchid cacti tend to flower more vigorously if they’re slightly root-bound).

Wait to repot your cactus orchid until about a month after blooming. Don’t remove too much soil from the root ball.

Instead, give it a light shake to remove excess soil and set the root ball in the new container. Then fill with fresh soil. Don’t water for a week after repotting.

You can add fresh soil if you have a large plant and don’t want to repot. Lightly top-dress the plant in its current container.

Common Problems & How to Treat Them

The most common issue affecting orchid cacti is overwatering. If your plant sits in water, you may notice stems turning limp or growing black at the base. This is an issue known as stem rot. If you see stem rot, take a break from watering. Cut blackened stems off at soil level.

Overexposure to harsh, direct light may lead to stems that turn yellow or look wilted. Too much light may also create a sunburned appearance.

Conversely, if your orchid cactus needs more light, it may take on a leggy, weak appearance.

Overwatering your plant may also lead to an infestation of fungus gnats. Other potential pests include aphids, mealybugs, and glasshouse red spider mites. Treat infestations using insecticide soap or Neem oil.

Look for spots on the stems, which may indicate a fungal issue. Often, fungus grows when water sits on stems for too long. Prevent fungus by watering away from stems and using well-draining soil.

Essential Tools to Have Around

Orchid cactus care doesn’t require many specialized tools. However, you will want sharp shears to prevent tearing while pruning or taking cuttings.

A spray bottle is handy to keep soil evenly moist.

Use a balanced 10-10-10 fertilizer during growing times. Twice a year, use a 2-10-10 fertilizer to promote flowering.

Wrapping Up

The orchid cactus offers bright, fragrant blooms. It’s especially dramatic when grown in hanging baskets. The trick to successful orchid cactus care is finding the optimal balance between light and water. The orchid cactus will beautify your home for years with the correct light exposure, adequate humidity, and well-draining soil.

Further reading: Discover 45 amazing types of orchids to grow at home.