Understanding the Christmas cactus bloom cycle—little water, dormancy, light, and temperature—will help you force a Christmas cactus to bloom.
Start by minimizing how much water the plant gets. This often occurs sometime in the fall, usually in or around October or the beginning of November (in most places).
Just enough irrigation should be reduced to keep the soil moist. Only water until the top 1 inch (2.5 cm) or so of soil feels dry to the touch. The plant will be able to go into dormancy as a result. A Christmas cactus needs to be dormant in order to blossom.
You must relocate a Christmas cactus such that it will experience 12 to 14 hours of darkness in order to further force the plant to bloom. While Christmas cactus can tolerate bright, indirect light during the day, it needs at least 12 hours of complete darkness at night to promote bud formation.
In addition to dark surroundings, your Christmas cactus needs cool temps. It should be between 50 and 55 degrees F on average (10-13 C.). As a result, confirm that the location can satisfy the needs for both light and temperature.
Why isn’t my Christmas cactus flowering?
Due to its short day length, the Christmas cactus cannot blossom due to drought stress or excessive light exposure. Christmas cacti are adapted to wet, frequently rainy jungles. If the conditions are dry or there are too many hours of sunshine during bloom production, it does not flower.
I’ve listed here a few other reasons that can stop the Christmas cactus (Schlumbergera) from flowering:
Continue reading to learn why your Christmas cactus isn’t blossoming and the finest methods for putting remedies in place so that it can produce blossoms.
How long does a Christmas cactus bloom from the bud stage?
If you follow the instructions above, it should take your Christmas Cactus 6–8 weeks to create buds, and another 4 weeks for those buds to bloom into blooms.
When should you put a Christmas cactus in the dark?
Put your Christmas cactus in complete darkness for at least 12 hours every day, beginning in October, to start blooming. In time for the holidays, the plant will have around eight weeks to develop buds and blossom as a result. To encourage your Christmas cactus to bloom again in February after the holiday flowering time, keep up this same pattern.
How long can a Christmas cactus live?
Christmas cacti can survive up to 100 years or longer if given the right care. Even news stories of families passing on their Christmas cacti to future generations as living heirlooms have been documented, such as this one about a particularly resilient plant that dates back to the 1860s. Wow!
The majority of Christmas cacti, however, only live for 20 to 30 years with proper care, despite the fact that they can last for decades and brighten your home every holiday season. By that time, the plants typically perish from widespread problems including overwatering, underwatering, freezing weather (if they spend part of the year outside), pests, illnesses, loss of interest, or simple neglect.
Help, my Christmas cactus is yellowing!
Yikes! Your watering routine is typically to blame if your Christmas cactus doesn’t seem to be growing well. These creatures require more water than desert cacti, but they also don’t want their soil to be wet.
You’re probably not watering your Christmas cactus enough if the leaves are becoming wrinkled and appear withered. You possibly overdid it if they’re more mushy and yellow-black in color. To get rid of any rotten roots and repot your plant in dry soil, you might need to uproot it.
Why are the leaves on my Christmas cactus limp?
Wilted leaves are frequently caused by improper watering because it is simple to provide too much water (rather than not enough). A Christmas cactus’ weak or drooping leaves are typically the result of either damp soil or root rot. If you have one issue, it will almost certainly lead to another.
Make sure that any extra water you give your Christmas cactus drains slowly but steadily through the drainage holes. If not, your potting soil may be too dense and may not be working. To promote aeration, you can repot the plant in bromeliad soil or fluff it up with perlite.
During the spring through winter growing season, keep the soil lightly moist; only water when the top inch of soil feels dry to the touch. After the flowering season is over, it’s good to allow the soil get a little bit dry in the middle of winter between waterings, but don’t let it get completely parched.
Is a Christmas cactus toxic to cats and dogs?
I’ll keep this short: no. The ASPCA states that Christmas cacti are not dangerous, despite the fact that ingesting any plant may cause some mild vomiting or diarrhea.
How do I get my cactus to bloom?
Cacti and succulents prefer summer and winter seasons, as well as a clear variation between night and day temperatures. Succulents prefer colder outdoor nighttime temperatures of 50-550F (10-130C) or at least 60-650F indoor nighttime temperatures (15-180C). Succulents prefer a noticeable contrast between their night and day temperatures to imitate their natural habitat, with the low night temperatures playing a crucial role in the plant’s growth cycle, especially when kept in a controlled setting.
If you want to see your succulents and cacti bloom, overwintering is also crucial. For desert cacti in particular, this can be accomplished by keeping plants cool and largely dry over the winter. During the winter, keep them at a comfortable temperature of between 35 and 440 °F (1.5-70C). If maintained indoors during the winter, try to keep them in an unheated room or keep the temperature low to provide them the necessary cold winter season. This does not apply to holiday cacti, such as Rhipsalis, Schlembergera, and Hatiora, which have different moisture and temperature needs than desert cacti (see below for Holiday cactus blooming tips).
Make sure the plants are kept in a bright area and receive enough sunshine throughout the year, including during the darker winter months. Most succulents and cacti require at least 4-6 hours of bright sunshine every day, if not more. Some plants require filtered but bright light to avoid solar damage since they cannot withstand harsh, full sun. Lack of light causes plants to gradually etiolate, become paler, and spread out in search of more light. To provide adequate lighting, place indoor plants in windows with a south or east orientation. If more light is required indoors, think about using grow lights. Lack of sunshine stunts the growth of succulent plants, and they are unlikely to blossom as effectively.
Giving your plants the nutrition they require instead of fertilizing them will assist maintain healthy growth and promote blooms. Flowers require a lot of energy to grow, therefore giving plants more nutrients during flowering season will assist meet their nutritional requirements. The best time to fertilize is during the active growing season, which is in the spring and summer. Fertilizers work best when applied every two weeks at a quarter- or half-strength. Avoid fertilizing during the winter and towards the conclusion of the fall growing season. It is acceptable and typical to use a balanced fertilizer blend that has been diluted to half strength. Cacti and succulent-specific fertilizer mixtures are also appropriate.
Although cacti and succulents can store water, they still require frequent watering during the active growing season. Regular watering helps to guarantee that they don’t lose all the water they need to store for growth. Regular watering also improves their ability to resist the hotter summer sun. Water plants thoroughly during the active growing season until water begins to leak out of the pot’s openings. Don’t water again until the soil has dried out. Before watering, check the top inch of the soil for moisture. During the hot summer months, watering should be done more frequently; during the chilly winter months, less frequently. Succulents and cacti suffer from overwatering, so make sure to let the soil dry out in between waterings.
Succulents and cacti require a well-draining soil in addition to suitable watering methods. Cacti and succulents don’t like to sit in water. If left moist for too long, their roots are prone to rot. The capacity of a succulent potting mix to drain efficiently is its most crucial requirement. You have the option of using store-bought potting soil or making your own for succulents. Giving them the proper medium increases their chances of flourishing and blossoming. Keeping your plants content will boost blooming.
Does Christmas cactus benefit from Epsom salt?
The winter solstice, which occurs on December 21 in the Northern Hemisphere, is the day and night with the shortest lengths of the year.
Christmas cacti, poinsettias, kalanchoes, and chrysanthemums are a few common plants that people give as gifts during the holidays. Their flowering is perfectly timed for the shorter days that we enjoy during this season.
The development of flower buds in many plants is influenced by how much light the plants receive. “Photoperiodism” refers to a plant’s response to the length of the day. While some plants flower as the days get shorter, others do so as the days become longer. Some plants are neutral, meaning that day length has no direct impact on flowering.
Brazilian Christmas cacti are common indoor plants that come in a wide range of hues, including red, rose, purple, lavender, peach, orange, cream, and white. In shaded rain forests, these plants thrive as epiphytes among tree branches, and their cascading stems make them an excellent choice for hanging baskets. If the plants are managed at a temperature of 68 degrees Fahrenheit, flowering can last seven to eight weeks.
During this time of year, customers frequently phone the University of Georgia Cooperative Extension office upset because their Christmas cacti or other short-day indoor plants did not bloom. They are frequently shocked to discover that if these plants are kept indoors year-round, the artificial light in the home can interfere with their natural cycle of exposure to sunshine. In order to simulate natural daylight exposure with shorter days, it becomes a difficulty.
One option is to put these plants near a window in a room that receives only natural light, turning off the artificial lighting at night. A different choice is to keep these plants outside as long as you can in the fall and then bring them inside just before the risk of freezing weather. In the Atlanta region, this typically means keeping the majority of tropical indoor plants outside until close to the end of October. Short-day plants are already set to begin flowering during the approaching holidays at this point.
On his porch, my grandfather used to keep a Christmas cactus all summer long in a hanging basket before taking it inside just before the first freeze each year. It was a large plant that would blossom in large numbers between Thanksgiving and Christmas. He maintained this plant for almost ten years, and it gave him a lot of Christmas delight.
A Christmas cactus has the advantage of not losing leaves like poinsettias or other houseplants, which is one of its many advantages. Because Christmas cactus lack genuine leaves, photosynthesis takes place inside the green stem segments known as phylloclades. To encourage branching terminals for more flowers, pinch back the stems in the first few weeks of June. You can also utilize stem portions with three to five segments to root new plants.
Temperature control and photoperiod (control of day and night length) control are key factors in the fall flower bud formation of Christmas cacti. Before flower buds will set, each night must have at least 14 hours of nonstop darkness.
For a full bud set, long nights must begin around the middle of September and last for at least six weeks. Be aware that even two hours of intermittent lighting can prevent flower buds from setting. Typically, buds will appear in approximately four weeks. Once the buds are set, the photoperiod has little impact on flowering.
Christmas cacti may live in dry, marginally submerged environments in the spring and summer. Avoid letting the soil become soggy, especially during the lengthy winter evenings. To stop flower buds from dropping off after bud set in the fall, the soil must be kept consistently moist. In the saucer underneath the pot, never let water stand.
From the time new growth begins in late winter or early spring through the summer, fertilize plants every month using a liquid fertilizer of half strength, such as 20-20-20 with trace elements. Compared to many plants, Christmas cacti have a greater magnesium need. Epsom salts (magnesium sulfate) should be used as a fertilizer every month during the growing season; however, it should not be used the same week as conventional fertilizer. Stop fertilizing in the late summer to increase the formation of bloom buds in the fall.
Do Christmas cacti benefit from coffee grounds?
During the growing season, give your cactus fertilizer with potassium, nitrogen, and phosphorus once or twice a month. It is simpler to feed a plant when the fertilizer dissolves in water. Epsom salts can also be administered to it (more about this in a moment).
Do Christmas Cactus Like Coffee Grounds?
As much as you do, your Christmas cactus will appreciate a cup of joe. Potassium and nitrogen, two nutrients the cactus needs to be healthy, are abundant in coffee grounds.
Spread the grounds out to dry first before using them because wet grounds might get moldy if used immediately. Give your plant its daily dose of coffee by either dispersing the dried grinds on the soil or blending them with water. Use this method to fertilize your cactus no more than once every two weeks.
Is Epsom Salt Good For Christmas Cactus?
Your Christmas cactus will, in fact, enjoy some Epsom salt. It’s an excellent approach to guarantee that the plant receives all the magnesium it requires to flourish and expand. One teaspoon of salt should be added to one gallon of water when mixing the salt and water. As it only requires fertilizer and food during the spring and summer growing seasons, stop feeding it in the fall.