The Christmas Cactus (Schlumbergera) is one of my favorite plants for a variety of reasons, including their beauty, the fact that they bloom over the holidays when most other plants aren’t at their best, and the fact that they continue to bloom for decades. Therefore, it makes sense that the sight of a Christmas Cactus shedding leaves would be alarming.
Overwatering or other situations that result in damp soil are the most frequent causes of Christmas cactus leaf drop. In addition to harming the rest of the plant, this results in root rot. Leaf drop can also be a result of ill-draining soil, temperature stress, excessive fertilization, poor lighting, or pests.
Why are my cactus’ pieces coming off?
Excellent and resilient plants, cacti are rarely troubled by numerous problems. However, cactus may also cause you some problems. One of the problems is a cactus that is falling over or drooping. You can discover the causes of your cactus drooping or toppling over in this essay, along with solutions.
Weak roots or being potted in a container that is too big for the plant are a couple of the main causes of a cactus drooping or toppling over. Other causes might include bugs, lack of sunlight, underwatering, and more.
How often should my Christmas cactus be watered?
Christmas cacti are highly common indoor plants, and for good reason too! They produce vibrant, tubular flowers that are pink or purple in hue when they bloom. They are a superb plant because of their lovely blossoms, lengthy bloom period, and simple maintenance needs. Someone in your family most likely owns a Christmas cactus!
About Christmas Cacti
The Christmas cactus (Schlumbergera x buckleyi) and its cousins don’t exist in hot, arid conditions like deserts or plains, in contrast to other cacti. These epiphytic succulents, which grow on tree branches and take in the high humidity, dappled sunlight, and moderate temperatures, are actually endemic to the tropical rainforests of southern Brazil.
Bottom line: Don’t handle a Christmas cactus like a typical succulent or cactus. They are unable to withstand the same kind of hot, dry weather that other cactus can. These cacti require more frequent watering than most succulents, but you also need to be careful not to overwater them. (See the care guidelines in more detail below.)
Thanksgiving, Easter, or Christmas Cactus?
The Easter cactus (S. gaertneri), Thanksgiving cactus (S. truncata), and Christmas cactus are the three main varieties of “holiday cacti” that are available (S. x buckleyi). The holiday that each cactus is named after often sees the most blooming. Thanksgiving cacti, which often bloom from November to February and hence go unrecognized as Christmas cacti, make up the majority of “Christmas cacti” sold nowadays. See our post on the several Christmas cacti species and how to distinguish them for more information.
Note: Because it’s the most widely used term and it applies to all three of these species, we’ll refer to all three of them on this page as “Christmas cactus” for simplicity’s sake.
Potting Christmas Cacti
- Choose a pot with a drainage hole on the bottom if you’re choosing one for a Christmas cactus. This prevents the soil from getting overly saturated.
- Most succulent-specific potting mixtures work well for Christmas cacti growth. It’s crucial that your potting soil drains properly.
Where to Put a Christmas Cactus
- Plants should be kept in indirect light that is bright. The best location has an east-facing window or a well-lit bathroom. The delicate leaves might be bleached by too much direct sunshine.
- It is preferable to have a daytime temperature of 70F (21C) and an evening temperature of 60–65F (15–18C).
- Christmas cacti do well in a more humid climate, so keeping them in a well-lit bathroom or kitchen is a smart idea.
- Christmas cacti can be kept in a shady area of the garden or on an unheated porch during the summer until the temperature drops below 50F. (10C). Keep them away from the sun’s rays outside.
How to Care for Christmas Cacti
- Water your plants every two to three weeks, but only when the top third of the soil feels dry to the touch. If the plant is in 6 inches of soil, for instance, water when the top 2 inches of soil feel dry. (Check with your finger!)
- When the soil is completely dry, wet it until water seeps through the drainage holes in the pot. To collect the water, put a tray underneath the pot. To prevent the pot from sitting in water, remove any extra water on the tray after 10 to 15 minutes.
- While the plant is in bloom, it’s very crucial to water thoroughly.
- Feed your indoor plants with a balanced houseplant fertilizer every two weeks from spring through early fall. Feed the cactus once a month in the fall and winter to promote fruitful blooming.
- To promote branching and more flowers, prune plants in the late spring. Simply cut a portion of each stem off; the plant will grow new branches from the incision.
- If desired, plant the cut pieces in potting soil that is only gently damp; they will easily root after a few weeks and make wonderful Christmas gifts!
How to Get Your Christmas Cactus to Bloom
The longer evenings and chilly weather of fall are what cause Christmas cacti and its relatives to bloom. The three major varieties of holiday cacti typically bloom on the following schedule:
- Thanksgiving cactus typically produce flowers from late October through mid-winter, making them the earliest and longest bloomers.
- Christmas cacti tend to bloom from early winter to mid-winter.
- Easter cacti flower around the middle of spring through late winter.
If your cactus isn’t flowering, it can be getting too much light or being exposed to too much heat. Here are some suggestions to help you get blooms from yours!
- For a minimum of six weeks, the nights must be at least 14 hours long and the days between 8 and 10 hours. You might need to cover your cactus or relocate it to an area that is exposed to the natural light cycle if you have powerful interior lighting that is on at night.
- When the plant is kept at temps between 50 and 60F, flower buds form best (10 and 15C).
- By subjecting the plant to temps around 45F (7C) for a number of nights in a succession, you can jumpstart the budding process.
- While the plant is in bloom, be sure to water it consistently. The plant may lose its buds if it dries out too much.
- Don’t worry if the cactus loses its buds one winter; the following year it should bloom.
The three primary varieties of “holiday cacti” are as follows:
- Often mistaken for Christmas cacti, Thanksgiving cacti (Schlumbergera truncata) bloom from late October to mid-winter.
- Christmas cacti (S. x buckleyi) flower in the early to midwinter months.
- Late winter to mid-spring is the blooming period for Easter cacti (S. gaertneri).
- Make sure to water your Christmas cactus frequently and keep it cool when the buds on the plant appear ready to open.
- The optimum time to propagate cuttings is late spring when most holiday cacti start to grow after their winter hibernation.
Blossom drop: If your Christmas cactus is exposed to any type of stress, the plant will likely drop its blossoms. As mentioned in the plant care section above, this could be caused by the amount of light or a sudden shift in temperature. Make sure your soil doesn’t become overly dry while buds are developing.
The plant could be vulnerable to mealy bugs and root rot if overwatered. If you experience issues, remove the affected sections and repot the plant in fresh soil.
How can the dropping off of Christmas cactus buds be prevented?
I sometimes think like everything is working against me and my plants. They can become unwell, fail to bloom, or fail to bear fruit for a variety of reasons. Christmas cactus bud drop can have a variety of causes, including improper cultural care, poor lighting, the plant’s erratic behavior, and environmental factors. These plants require more water than real cacti, and they need at least 14 hours of darkness each day for the buds to form. Incorrect hydration, drafty circumstances, hot or cold temperatures, and an abundance of buds are additional problems that could cause a Christmas cactus to drop its bloom buds.
The most frequent issue with Christmas cacti, aside from root rot, is bud drop. Being sensitive plants that were raised in tightly regulated conditions, it is frequently brought on by a change in the environment. Bud drop can be caused by just moving your plant to a different spot in the house, but fresh plants are going to experience a full host of shocks that could also cause buds to fall.
The plant will become confused by changes in temperature, humidity, lighting, and maintenance, and will cease producing all those gorgeous blossoms. Try to mimic greenhouse maintenance as nearly as you can.
- Water the soil evenly, but avoid letting it become wet.
- In the late summer, stop fertilizing.
- Maintain a range of 60 to 80 degrees Fahrenheit (15-26 C.). Christmas cactus buds may fall off in temperatures over 90 F (32 C).
Brazil’s densely forested tropical jungles are home to Christmas cacti. These epiphytic plants grow in the warm, shady womb that the dense tree canopy and other vegetation create. To force bud formation, they need a time without much light. Give the Christmas cactus 14 hours of darkness from September through the end of November, but bright light the rest of the year to guarantee that there are no buds falling off and that production is dense.
The plant naturally experiences these “long nights” in its home country. The plant should be kept in bright light for the final 10 hours of the day, but keep it away from direct sunlight coming from southern windows. The fake lighting routine can be stopped once the buds have settled and started to open.
What should I do if a cactus branch breaks off?
You can plant the broken portion of a cactus if it breaks off. Before planting the fractured piece in its own container, you must give it time to harden.
How can you determine if a cactus has been overwatered or not?
The cactus won’t typically seem radically different from day to day because underwatering typically happens gradually over time.
There are a few indicators, nevertheless, that will let you know if your cactus is submerged.
Signs of an Underwatered Cactus
Knowing the warning signals of an underwatered cactus is crucial for prompt response. Your cactus will have a better chance of recovering if you do this.
The most typical warning indicators of a submerged cactus include:
The Cactus Is Light Green or Yellowish
Since this normally happens gradually over time, the color change might not be apparent right away.
If your cactus begin to become light green or yellowish, keep an eye out for more symptoms of an underwatered plant.
The Spines Are Falling off Easily
A well-watered cactus has roots that go far into the ground and take in water there.
Their root systems do not, however, work correctly while they are underwater because the dearth of nutrients in the soil leads them to wither away.
As a result, the spines become fragile and easily detach.
another typical indicator of a submerged cactus
The Cactus Is Wilting
Due to nutrient deficiency, their spines cannot support the plant adequately, which causes them to lose their shape.
As a result, plants that were formerly upright and in good shape gradually start to sag or droop.
Decay at the Base of the Plant
Roots will cease developing and begin to deteriorate over time if they are unable to absorb enough nutrients from the soil as a result of a lack of water, which will eventually result in decay at the base of the plant.
It’s possible that you won’t immediately notice whether or not your cacti are underwater because this normally happens gradually.
The New Growth on Your Cacti Is Weak and off Center With Older Growth
Lack of nutrients will have an impact on how a cactus develops new limbs.
In this instance, you’ll see that the younger growth is somewhat deformed and less symmetrical than the older ones-another indication that the cactus has been submerged.
How can an overwatered Christmas cactus be identified?
Any cactus that has been left to sit in a saucer of water is probably less healthy. The Christmas cactus plant will manifest clear signs of suffering if it is overwatered. To avoid moisture gnats and preserve the roots from decaying, you should always dump the extra water from the saucer if it hasn’t dried in a day.
One of the first signs of overwatering on a Christmas cactus are limp leaves that begin to fall off, just in case you forgot to do this. The stems and branches will thereafter become mushy and spongy. In severe situations, the stem can entirely rot off and the symptoms will include a bad smell.
Prevention is easy to do. To avoid overwatering Christmas cactus, use a soil moisture meter.
What kind of plant are overwatered cactus?
The obvious indicators of an overwatered cactus caused by a fungus in the soil include black or brown blotches and mushy stems. It’s time to carefully chop them off with a knife if you experience any of these bodily symptoms. Use a sterilized knife while handling a rotting plant to prevent the spread of the infection.
You will have to exert more effort if the damage is severe. Essentially, what you’ll be doing is multiplying the portions of your plant that are still alive. Wear nitrile gloves to protect your hands from the cactus’ spines while you chop off the rotting sections, and exercise extreme caution when handling the plant. After cutting out the damaged areas, let your cuttings air dry for a few days, or around a week.
How can a Christmas cactus be revived?
Repot the Christmas cactus into new soil when it is extremely limp and the earth is wet. As much soil as you can gently remove from the pot after removing the weak Christmas cactus from it. By repotting your Christmas cactus with your own homemade soil, you can prevent future issues. Use high-quality potting soil in a 2:1 ratio with sand or vermiculite to ensure precise drainage.
Repotting a weak Christmas cactus might be the answer, even if the soil is dry. Even though the plant prefers to be tucked away in its pot, switching to a little larger pot with new soil every few years will help you prevent Christmas cactus issues.