Drought stress or too much light, as it is a short-day plant, are the causes of Christmas cactus not blooming. The Christmas cactus has evolved to thrive in humid, rainy environments. If it’s too dry or there are too many hours of sunshine during bloom creation, it won’t flower.
There are a number of other reasons that can hinder the Christmas cactus (Schlumbergera) from blossoming, which I’ve included below:
Continue reading to learn why your Christmas cactus isn’t blossoming, as well as the best methods and strategies for getting it to bloom…
How do I get my Christmas cactus to bloom again?
Christmas cactus, unlike many other succulents, can bloom again in the spring if given the right conditions. Christmas cactus can be encouraged to flower again by placing it in an east-facing window that receives plenty of sunlight during the day and 12 hours of darkness at night.
Why did my cactus stop flowering?
Cacti are fascinating, exotic plants that add an abundance of unique grandeur to homes and gardens. If your indoor cacti aren’t flowering, it’s most likely because of a lighting, temperature, soil, or water issue. Also, some cacti species might take up to 50 years to reach flowering maturity! When purchasing a cactus from a garden shop or nursery, choose one that is in bloom to ensure that it is old enough to bloom.
Can you force a Christmas cactus to bloom?
To induce a Christmas cactus to bloom, you must first understand the Christmas cactus bloom cycle, which includes a lack of water, dormancy, light, and temperature.
Begin by reducing the amount of water given to the plant. This normally happens in the fall, towards the end of October or the beginning of November (in most places).
Reduce the amount of water you use just enough to keep the soil moist. Only water when the top layer of soil, about 1 inch (2.5 cm), is dry to the touch. The plant will be able to enter dormancy as a result of this. For a Christmas cactus to blossom, it must be dormant.
To encourage a Christmas cactus to bloom even more, relocate it to a location where it will have 12 to 14 hours of darkness. Although bright, indirect light is OK during the day, Christmas cactus requires at least 12 hours of darkness at night to enhance bud growth.
How often does a Christmas cactus bloom?
Is it true that Christmas Cactus blooms more than once a year? In February, my Christmas Cactus bloomed again, and I explain how it happened here.
When November and December arrive, Christmas Cactus are in high demand.
Even when they’re not in flower, I like them and think they’d make good houseplants. But wait, did you know they can make the same flower twice? My Christmas Cactus started blooming again in February, proving that they do flower more than once a year.
Let’s get a little more technical for those of you who, like myself, are plant nerds. The Thanksgiving (or Crab) Cactus that you see here and in the video is actually a Christmas Cactus. When I bought it, it was labeled as a CC, and that’s how it’s usually sold in the trade. Nowadays, they’re commonly referred as as Holiday Cactus. They can re-bloom more than once a year, regardless of which one you have.
My Christmas (Thanksgiving, Holiday) Cactus in bloom again:
I’ve received a few concerns from readers about their Christmas Cacti flowering more than once a year, and whether this was “normal” or not. Some people’s flowers bloom again, whereas others do not. What triggers their re-blooming? I’ll tell you about the situation I’ve been in and what I’ve done.
What is wrong with my Christmas cactus?
- Basal stem rot is easily identified by the appearance of a brown, water-soaked patch at the base of the stem, which occurs most commonly in cool, damp soil. The lesions ultimately make their way up the plant’s stem. Unfortunately, basal stem rot is usually fatal since the diseased portion is cut away from the plant’s base, removing the plant’s supporting structure. Starting a new plant with a healthy leaf is the greatest option.
- Plants with root rot, on the other hand, are difficult to rescue. A wilted appearance and wet, black or reddish brown roots are signs of the illness, which causes the plants to wilt and eventually die. If you catch the disease early enough, you might be able to rescue the plant. Take the cactus out of its pot. Remove the fungus by rinsing the roots and trimming any decaying portions. Repot the plant in a pot with a cactus and succulent-specific potting mix. Make certain that the pot has a drainage hole.
Because individual pathogens are difficult to diagnose and each pathogen requires a separate fungicide, fungicides are frequently useless. Water the plant thoroughly, but only until the potting soil feels slightly dry, to avoid rot. Allow the water to drain from the pot and do not allow the plant to sit in it. During the winter, water sparingly but never completely dry up the potting mix.
Should I water my Christmas cactus when it is 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.
How do I force my cactus to flower?
Succulents and cacti prefer a significant temperature change between night and day, as well as summer and winter months. Succulents prefer colder nighttime temperatures of 50-550F (10-130C) outside or at least 60-650F inside (15-180C). Succulents prefer a significant temperature differential between night and day temperatures, especially when kept in a controlled setting, to simulate their natural habitat, with the low night temperatures playing an important role in the plant’s growth cycle.
If you want to see your cacti and succulents bloom, you’ll need to overwinter them. Desert cactus, in particular, might benefit from keeping cold and dry during the winter months. During the winter, keep them cool by keeping the temperature between 35 and 440 degrees Fahrenheit (1.5-70C). If you must keep them indoors during the winter, keep them in a non-heated room or maintain the temperature low to provide them the chilly winter time they require. Holiday cacti like as Rhipsalis, Schlembergera, and Hatiora have different hydration and temperature requirements than desert cacti (see below for Holiday cactus blooming tips).
Ensure that the plants get enough sunlight all year and are kept in a bright position, even during the colder winter months. The majority of cacti and succulents require at least 4-6 hours of bright sunshine per day, if not more. Some plants cannot tolerate direct sunlight and require filtered but bright light to avoid sun damage. Plants that don’t get enough light eventually etiolate, become pale, and extend out in search of more light. Indoors, place plants in windows that face south or east to ensure ample lighting. Consider utilizing grow lights to offer enough light indoors if necessary. Succulent plants that don’t get enough sunshine don’t grow well and aren’t likely to flower as well.
While fertilization isn’t required, providing your plants with the nutrients they require will help them grow properly and bloom. Plants expend a lot of energy to develop flowers, thus supplementing their nutritional needs during flowering season will help. Fertilizing during the active growing season, or during the spring and summer months, is the most popular recommendation. Fertilizers should be administered every two weeks at a quarter or half strength. Fertilize less near the conclusion of the fall season and during the winter months. A balanced fertilizer blend diluted to half strength is appropriate and widely used. Fertilizer blends designed specifically for cactus and succulents can also be used.
Despite the fact that cacti and succulents can store water, they nevertheless need to be watered on a regular basis during the active growing season. Watering them on a regular basis ensures that they don’t run out of the water they need to grow. Watering them on a daily basis also enables them to better withstand the hotter summer months. Water plants thoroughly during the active growing season until water leaks out of the holes in the pot. Wait until the earth is completely dry before watering again. Before watering, feel the top inch of the soil for wetness. Watering frequency should be increased during the hot summer months and decreased during the cold winter months. Succulents and cactus suffer from overwatering, so make sure to let the soil dry out between waterings.
Succulents and cacti require a well-draining soil in addition to suitable watering practices. Succulents and cactus dislike being submerged in water. If their roots are left moist for too long, they will decay. The capacity to drain well is the most crucial feature of a succulent potting mix. You can use a commercial potting mix or make your own succulent potting mix. They have a better chance of surviving and blossoming if you give them the correct medium. Maintaining a nice environment for your plants will encourage them to flourish.
Why won’t my cactus flower open?
You might find that your cactus hasn’t bloomed even after you’ve followed all of these steps. If you’re wondering why your cactus isn’t blossoming, it’s time to troubleshoot.
Because each cactus is diverse and unique, a tweak that causes one cactus to bloom may not cause your cactus to bloom.
It’s crucial to attempt one item at a time while troubleshooting your cactus flowers so you know what works and what doesn’t. It may take some time, but once you see those lovely blooms, it will be well worth it!
Light
Cacti require a lot of light, however different types of cacti have varying requirements. If your cactus is thriving in its current light but still isn’t blooming, experiment with the illumination.
Move the plant a few feet away from the window or place it in a window with more light. Alternatively, you might use an artificial grow light. For even growth, turn the pot on a regular basis. If you don’t think light is the issue, move on to the next step.
Water
Water, like light, is necessary for a happy, healthy cactus, but just a little. When troubleshooting your cactus’ watering, the first step is to determine how frequently you water it. Do you water your cactus on a regular basis? Or are you waiting for the cactus to inform you it’s time to water it? Before you irrigate the soil, make sure you test it.
If it still isn’t flowering after you water it when the soil is dry, check the soil deeper in the pot. It’s possible that it’s still damp beneath the surface. Stick a pencil in the pot’s side to see if this is true. It is entirely dry and can be watered if it comes out clean. If dirt sticks to the pencil, it’s too wet, so wait till later to water it.
Timeof Year
Keep the season in mind at all times. If it’s autumn or winter, your cactus isn’t likely to blossom anytime soon (unless it is a Christmas cactus). Wait until the optimal growth season, which begins in the spring, to begin.
You’ll have a better chance of seeing it bloom during the peak growing season than during the rest of the year, especially when contrasted to its dormant phase. Keep an eye on it to see if the little buds begin to emerge!
When it comes to stimulating cactus blossoms, the most important thing to remember is that your cactus must be in excellent condition in order to bloom.
It will be less likely to blossom if it does not receive sufficient water and sunlight. Your cactus will bloom eventually if it is happy and healthy. Keep a careful eye on it to see what it need. Give it plenty of time and patience as well!
How often should I water my Christmas cactus?
- 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!
How can you tell if a Christmas cactus is overwatered?
Although sagging, limp leaves and stems that are mushy at the bottom are strong indicators of overwatering and root rot, the only way to know for sure is to examine the plant’s roots.