Christmas Cactus Care Tips for a Thriving Plant Year After Year

The Christmas cactus is a coastal Brazilian rainforest native plant named for its festive flowers that often appear around the holidays. With proper Christmas cactus care, it can bloom at other times and live for years. The orchid-like flowers blossom in shades of red, pink, purple, orange, and white. In its natural habitat, it gets plenty of moisture and high humidity. That means it has different care requirements than other cacti in your indoor garden.

Have furry friends at home? Not to fret, this pretty plant is also pet-friendly.

Christmas Cactus Care Tips

With the right Christmas Cactus care, you can easily get a plant to thrive and bloom year after year indoors.

Light and Temperature

Bright but indirect light is best for a Christmas cactus. It can tolerate a little direct light, but avoid direct light during the summer, when the sun's rays are stronger and can burn the fleshy leaves. “If the stems begin to turn a reddish-purple color, this is an indication that it is receiving too much sun,” says Alfred Palomares, Resident Plant Dad for 1-800-Flowers.com. In too little light, plants will become thin and spindly, and the blossoms, if they bloom at all, will be sparse.

Christmas cactus thrives in cooler temperatures and will grow best in ranges from 60–70℉. It's best to keep the plant away from radiators, fireplaces, and other extra warm places. During warm summer months, you can grow your Christmas cactus outdoors in a sheltered, part-shade location. Just be sure to bring the plant indoors before temperatures get below 50℉.

Water and Humidity

The time of year is critical when determining watering levels and amounts. While most cacti can thrive in drier climates, Christmas cactus requires weekly watering in the spring and summer months. "Hold off on watering in early October until buds begin to set, then start to give it a weekly drink again until flowering stops," says Palomares. During flowering season, keep it evenly moist at all times. "Once flowering stops in January, a twice-monthly watering schedule is recommended throughout the rest of the winter to avoid overwatering," he adds.

Christmas cactus care should include higher humidity, so you may want to place a humidifier nearby. Or, try putting your plant on a tray of pebbles and filling the tray with water just below the top of the rocks. As the water evaporates, it increases humidity around the plant.

Fertilizer

When it's actively growing from late winter to late summer, Christmas cactus care includes a monthly dose of liquid fertilizer at about half strength. This plant benefits from micronutrients, too, particularly magnesium, which you can provide by mixing a teaspoon of Epsom salts (magnesium sulfate) into a gallon of water. Apply this mixture monthly during active growth, but not at the same time you add fertilizer.

Pruning

Pruning is usually unnecessary unless you'd like to reduce the size of an overgrown Christmas cactus. Remove faded flowers to encourage the cactus to continue blooming as long as possible.

Potting and Repotting

Use 3 parts regular potting soil mixed with 1 part potting mix formulated for cacti and succulents to provide a little extra drainage. Make sure the container has drainage holes because while this cactus needs plenty of moisture, too much will cause it to rot.

You won't need to repot the plant very often because Christmas cactus actually flowers better when it's a little pot-bound. Every three years or so you can repot it in the spring as it begins to actively grow again.

Pests and Problems

Any stems that have softened or that are yellowing are an indication of too much water. "Aside from letting the soil become dry between drinks, make sure that it is well drained so water can move freely," says Palomares. "The plant should also be potted in a container with drainage holes so that the roots don't sit in pooled water and develop root rot."

Stem wilting or wrinkling can signify the opposite problem of not enough water. If that is the case, give the cactus a full drink of water and try not to let it get too dry again. 

Palomares points out that flower buds can fail to develop and bloom if the light and water received before early October (when watering stops) are insufficient. Bud loss can also happen if the plant doesn't get enough humidity or has too much water. It's best to avoid moving a plant during this time, as movement from one room to another can stress it out and cause the flower buds to drop off.

Several houseplant pests, such as mealybugs, spider mites, and scale, can attack Christmas cacti. A strong spray of water can be enough to dislodge most bugs. Christmas cacti care should include treating the plant with neem oil according to label directions for more persistent pests.

Christmas Cactus Requirements for Blooming

Christmas cacti care requires specific lighting during its flowering season to help it set buds. Sleep cycles are important not just for humans but for plants too. "Be mindful that if the buds have not set yet, then just like people, this houseplant needs its sleep and requires between 12-15 hours of complete darkness per day," says Palomares.

Late-summer, cooler nights as fall begins to set in help to naturally start this process for Christmas cacti growing outside in the summer. To initiate it indoors, count back eight weeks from the date you want blossoms. At this point, place your plants where they'll get the required amount of uninterrupted darkness. This means no light of any sort, not even a lamp or streetlight through a window. One way to do this is to keep the plant in a basement or dark room with a grow light on a timer for eight weeks. Once buds have begun to set at the tips of the leaves, place the plant back in its usual spot.

With the right Christmas cactus care, these plants "typically bloom in late October to winter (around January)," says Palomares. "Throughout its flowering season, it will continue to set buds and bloom, but in January, it will begin to wind down until the following year. However, sometimes, you might see buds appear now again."

Types of Christmas Cactus

Christmas Cactus

Schlumbergera x buckleyi has scalloped leaf margins and whorls of satiny flowers that dangle from segmented stems, which resemble leaves. It is sometimes called zygocactus or holiday cactus. The true Christmas cactus usually does not bloom until mid-December; many plants sold as Christmas cacti are actually Thanksgiving cacti.

'Madame Butterfly' Christmas Cactus

This rare variety of Schlumbergera has cream-color variegated leaves and magenta flowers with white centers.

Thanksgiving Cactus

Schlumbergera truncata blooms several weeks earlier than Christmas cactus. It has two to four pointed teeth along the margins of stem segments.