Fertilize the plant every month after it has bloomed, starting when you see fresh growth at the end of winter or the beginnings of spring. Feed a Christmas cactus with a 50 percent strength 20-20-20 or 10-10-10 plant food diluted with water. Apply a monthly application of a magnesium sulfate solution at a ratio of 1 teaspoon to 1 gallon of water to the plant, but not the same week you apply the plant food.
How do you care for a Christmas cactus while it’s blooming?
- Watering: Mist your plant frequently while it is blooming to keep the soil uniformly moist.
- Light: For moderate light and some direct sun, place the cactus in an east-facing window.
- Fertilize every two weeks once buds have formed with a high-potassium fertilizer.
When should you fertilize your Christmas cactus?
Holiday cacti prefer mild shade and warm temperatures. While full sunshine is good in the fall and winter, intense sunlight in the summer can cause plants to become pale and yellow. During its growing season, which runs from April to September, temperatures between 70 and 80 °F are ideal for spring and summer growth. Thanksgiving and Christmas cactus rely on shorter day lengths (8 to 10) and cooler temperatures to establish their flower buds in the fall. Once the flower buds have been placed in the fall, keep the temperature below 90 degrees Fahrenheit. Warm temperatures can cause flower buds to fall out. If temps drop below 50 degrees Fahrenheit, don’t leave these cactus outside.
Temperature adjustment and photoperiod (day and night length) control are key to effective flower bud formation in the fall. Plants require the following to start flower buds:
- The nights are long. Flower bud set requires fourteen hours or more of continuous darkness each day. Long evenings should begin around the middle of September and last at least 6 weeks to ensure proper bud set. Flower bud set can be inhibited by as little as 2 hours of interrupted lighting. Buds will usually appear in 3 to 4 weeks. Once the buds are set, the photoperiod has little effect on flowering.
- For optimal bloom output, keep fall growth temperatures between 60 and 68 °F, preferably as close to 68 °F as possible. Plants planted in temperatures ranging from 50 to 59 degrees Fahrenheit will produce flower buds regardless of day length, however growth may be slower and bud drop may occur at 50 degrees Fahrenheit.
- Early in June, pinch back the stems to encourage branching and more terminals for more flowers.
- At the end of September, pinching (also known as leveling) is performed to remove any terminal phylloclades that are less than 1 cm (0.4 inch) long and to make all stems roughly the same length. Flower buds will not form on these immature and short stem segments until they mature. A flower bud grows on the previous, more mature stem segment after a short phylloclade is removed.
Watering and Fertilizer: When the growing media is dry to the touch, water it. During the spring and summer, the holiday cacti can tolerate dry, slightly under-watered conditions. Allowing the soil to grow saturated, especially during the dark days of winter, is not a good idea, but neither is allowing it to totally dry out. To prevent flower bud abscission, the growing media must be kept uniformly moist following bud set in the fall. Allow no water to collect in the saucer beneath the pot.
Fertilize plants monthly using a half-strength soluble fertilizer, such as a 20-10-20 or 20-20-20 with trace elements, starting when new growth begins in late winter or early spring and continuing through the summer. Holiday cacti have a greater magnesium demand than many other plants. Apply Epsom salts (magnesium sulfate) combined at 1 teaspoon per gallon of water once a month throughout the growing season, but not on the same week as the regular fertilizer. Fertilize less in the late summer to encourage more flower bud formation in the fall.
Growing Media: Holiday cacti flower best when they are kept in a pot. Repotting is only required every three years or so, and it is best done in the spring. Because these epiphytic cacti do not grow well in heavy, moist potting mixes, the potting medium must be well-drained with excellent aeration. 60-80 percent potting soil and 40-20 percent perlite make a nice blend. Choose a pH-balanced potting soil from a reputable manufacturer.
How often should you water Christmas cactus when in bloom?
- Water every two to three weeks, but only until the top one-third of the soil feels dry to the touch. Water when the top 2 inches of soil feel dry, for example, if the plant is in 6 inches of soil. (Check with your finger!)
- Soak the soil until water runs through the drainage holes in the pot when it is suitably dry. To catch the water, place a tray underneath the pot. Remove any extra water from the tray after 10-15 minutes so that the pot does not sit in water.
- Feed every two weeks with a balanced houseplant fertilizer from spring through early fall. Feed the cactus once a month in the fall and winter to encourage blooming.
- Late in the spring, prune plants to encourage branching and more flowers. Simply cut a few portions off each stem, and the plant will branch out from the wound.
- Place the cut pieces in a gently wet potting soil if desired; they will root easily after a few weeks and make great Christmas gifts!
How to Get Your Christmas Cactus to Bloom
The lower temperatures and longer evenings of autumn bring out the blooms of Christmas cacti and its relatives. This is the general blooming schedule for the three main species of Christmas cacti:
- Thanksgiving cactus are the earliest and most persistent bloomers, blooming from late October to mid-winter.
It’s possible that your cactus isn’t flowering because it’s getting too much sunshine or being exposed to too hot temperatures. Here are some pointers to help you get yours to bloom!
- For at least six weeks, nights must be at least 14 hours long and days must be between 8 and 10 hours. If you have powerful interior lighting that is turned on at night, you may need to cover your cactus or transfer it to a location where it can be exposed to natural light.
- Flower buds form best when the plant is kept between 50 and 60 degrees Fahrenheit (10 and 15 degrees Celsius).
- By exposing the plant to temperatures of around 45°F (7°C) for several nights in a row, you can jumpstart the budding process.
- Ensure that you water the plant on a regular basis when it is in bloom. If the plant dries out too much, the buds may fall off.
- Don’t worry if the cactus loses its buds throughout the winter; it will bloom the next year!
Why are the leaves on my Christmas cactus limp?
A lack of water or too much direct sunlight can create wilted or limp Christmas cactus. If you haven’t watered the wilting Christmas cactus, start by giving it a small sip. Continue to water gently every several days until the soil is wet but not saturated.
Christmas cactus troubles are sometimes caused by damp soil. Because the Christmas cactus is an epiphyte that takes water and nutrients from the air in its natural habitat on the tropical forest floor, it cannot tolerate damp roots. Christmas cactus can become very limp because to poor drainage and damp roots.
If the leaves on your wilted or limp Christmas cactus appear to be dried or burnt, move it to a more shady location, especially in the afternoon.
Are coffee grounds good for Christmas cactus?
Your Christmas cactus will appreciate a cup of coffee just as much as you! Coffee grounds are high in potassium and nitrogen, which the cactus requires to stay healthy. You should not use the grounds right away since damp grounds can mold, so spread them out to dry first.
Why is my Christmas cactus blooming in June?
“What went wrong with my grandmother’s Christmas cactus that is about to bloom? Mary Ann
Hello, Martha. In addition, I have a “I have a “Christmas” cactus blooming right now, and I’m calling it my Winter cactus because of the blooms. In Missouri, these hardy tropical plants require a little assistance to bloom on time. They have weather triggers in their native Brazil that cause them to bloom in December, the start of the South American summer.
If it originated from your grandma, your cactus could be an older, authentic Christmas cactus. The majority of cacti on the market today are Thanksgiving cacti, which explains why they bloom in late November.
Look at the green fronds to see what kind of cactus you have. Thanksgiving cacti (Schlumbergera truncata) have pointed, jagged edges, whereas the original Christmas cactus (Schlumbergera bridgesii) has smooth, round edges.
Because I had it outside on my back porch last fall, it began to bloom. Thanksgiving and Christmas cacti are known as “short day plants,” as they require fewer daylight hours and/or cool night temperatures to produce flower buds. The shorter days and chilly nights of autumn prompt the plants to start producing buds.
Place your Christmas cactus indoors in a cool, bright location with daytime temperatures of 65-70° F and evening temperatures of 55-65° F to ensure that it blooms when you want it to. Plants will bloom in about 5-6 weeks if they are exposed to cooler night temperatures of 55° F, regardless of the day length.
Should you deadhead Christmas cactus?
Deadheading cactus flowers can promote additional blooms and encourage growth while also tidying up the cactus. While not necessary for all cacti because some cactus flowers drop from the plant once they are spent, deadheading cactus flowers can promote additional blooms and encourage growth while also tidying up the cactus. While the Christmas cactus is in bloom, deadheading can be done at any time during the growing season.
Should I mist my Christmas cactus?
Christmas cacti, contrary to popular belief, can live well beyond the month of December. With a little TLC and some advise from us, they can live for up to 20 years.
Christmas Cacti need cooler temperatures.
If you keep your Christmas cacti in a room that’s between 60 and 70 degrees Fahrenheit, they’ll bloom more and faster. It’s especially vital to keep them away from radiators, fires, and warm windowsills in the winter.
While they don’t need the heat of the sun, they do need its light.
This is when things get a little complicated. The sun will dry up a Christmas cactus if it is left in direct sunlight, although it does require lots of sunlight. So, what should a cactus aficionado do? Leave it in a somewhat shaded location of your house (or outside once summer arrives) and rotate it every now and then.
Just like you and I, Christmas cacti need their rest.
If the buds on your cactus haven’t set yet, it will require 1215 hours of complete darkness per day. Cacti flourish in bright light only once their buds have set.
You should be misting, not watering, every day.
Your cactus will die if it is overwatered. That isn’t to say they don’t become thirsty. You should mist your cactus every day instead of watering it like you would a typical plant. All you need is a few squirts from a spray bottle to keep your cactus happy. Watering the plant’s base should only be done when the soil is absolutely dry to the touch.
Christmas cacti need nutrient-rich soil.
Christmas cactus are resilient plants that may thrive in a variety of soils, but they need well-drained, somewhat organic matter-rich soil. While you can always buy organic soil, you may also use your cacti as a little compost and add organic materials that would otherwise be discarded.
Do you water a Christmas cactus from the top or the bottom?
Remember that Christmas cactus plants prefer moist soil rather than the dry soil preferred by most other succulents. When the top inch or two of soil on a Christmas cactus is dry, water it. Fill the pot saucer with stones and water to just below the tops of the pebbles (the pot should not be sitting directly in water) to assist improve the humidity around your plant. As the water evaporates, the air will become more humid. (See below for watering suggestions if you’re attempting to get your Christmas cactus to rebloom.)
What triggers a Christmas cactus to bloom?
Thanksgiving cactus, holiday cactus, and crab cactus are all names for the Christmas cactus (Schlumbergera truncata). The leaf-shaped stem segments with curled, sharp teeth or claws around the margins are known as crab claws. The leaf segments of the Easter cactus (Schlumbergera buckleyi) have rounded edges. They all originated in the gloomy, damp forests of southeast Brazil. They’re called epiphytes because they live in trees above ground, in places where branches meet and decomposing fallen leaves and mosses collect.
Despite the fact that this plant is called a cactus, the care it requires has nothing to do with its desert cousins. It’s a cactus that grows in the forest. Its requirements can be traced back to their source. The best time to plant a Christmas cactus is when it is warm “I’m stuck in a pot.” This entails keeping it in a small container for as long as possible before transferring it to a little larger pot. They prefer a nutrient-dense organic potting mix and should not be allowed to dry out. When the plant is blooming, increase the amount of water it receives. They prefer indirect light that is bright. As the plants begin to burn, the leaf segments might turn a dark crimson color.
‘The’ “The “secret” to getting your Christmas cactus to bloom in the years after you buy it boils down to two factors: light and temperature. These two are the keys to the kingdom of flowers. Flowers are produced by Christmas cacti in a chilly, short-day cycle. It takes at least eight days of 16 hours of darkness and 8 hours of light every day to start the creation of flower buds. Do not turn on the lights at night, even if only for a brief time, wherever the plant is put. This violates the required dark cycle. It should be around 61 degrees Fahrenheit. Avoid placing the plant in an area where it will be exposed to cold or hot air drafts.
It’s as simple as putting the Christmas cactus on the window sill in a chilly room and not turning on the lights. If the plant was in a brightly lit room, the side closest to the window often grows buds, but the plant’s illuminated side does not. If the plant produces flower buds but then loses them, it’s usually due to either too much or too little water or a lack of air humidity. The good news is that if their temperature and light needs are met, Christmas cacti are reasonably straightforward to re-bloom.