Most commonly planted as a houseplant, it has the unique quality of flowering during the shortest days of the year, giving color and brightness to the home when most other plants are withering or preparing for the winter. When your Christmas cactus begins to lose leaves, this is all the more cause to be concerned. It may be as simple as identifying the problem when it comes to preventing and repairing leaf drop on Christmas cactus. There are a number reasons why otherwise healthy Christmas cactus leaves fall off, with the following being the most common:
Improper watering Overwatering is a big no-no when it comes to caring for Christmas cactus. Despite the fact that Christmas cactus requires more moisture than its desert siblings, too much water can cause the plant to rot, which is a common reason of Christmas cactus leaves falling off. Underwatering can also cause leaves to fall, though this is less common.
A Christmas cactus should be watered once a week or when the top of the soil seems dry to the touch, as a general rule. Allow the pot to drain completely before placing it on the top, then water until moisture trickles through the drainage hole. Don’t let the soil become too dry, but don’t let it get too wet either. During the fall and winter, water the plant sparingly.
Soil that is too dense or compacted If your Christmas cactus leaves are dropping off, it could be due to poor drainage. The Christmas cactus needs a permeable, well-drained soil to thrive. Repotting in a clean pot with fresh potting soil may be beneficial if the soil is compacted or does not drain effectively. It’s best to use a potting mix that’s 75 percent standard, good-quality potting soil and 25 percent sand or perlite. Make certain that the pot has a drainage hole.
How often should you water a 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.
What to do with cactus leaves that fall off?
If you notice that your succulent leaves are becoming mushy, soggy, and dropping off on a regular basis, it’s time to use the watering can to cool it down! When the soil in which your succulent is placed is fully dry to the touch, you should water it. You’ll probably only need to water your succulents once or twice a week.
What does an Underwatered Christmas cactus look like?
The health of any cactus that has been let to sit in a saucer full of water is likely to suffer. A Christmas cactus plant that has been overwatered will display evident indications of discomfort. If the saucer hasn’t dried in one day, dump the extra water to avoid moisture gnats and root damage.
If you don’t remember to water your Christmas cactus, one of the first signs of overwatering is limp leaves that begin to fall off. The stems and branches will soften and become mushy as a result. In severe situations, the stem will rot entirely off and emit a horrible stench.
It’s easy to avoid. To avoid over-watering your Christmas cactus, use a soil meter.
Should I water my Christmas cactus from the top or bottom?
Remember that Christmas cactus plants demand moist soil rather than the dry dirt 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.)
Why is my cactus drooping?
Your cactus plant may be stressed if its branches are drooping or sagging. Insufficient water or sunlight, freezing damage, or mealy bugs can all stress your cactus and cause it to sag.
How do you save an overwatered Christmas cactus?
How can I revive a Christmas cactus that has been overwatered?
- Eradicate the roots from the pot and cut away any rotten roots, then wash the remaining roots to remove any fungus.
- Leave the plant in a warm, well-ventilated room overnight to allow the roots to dry out.
How do I know if my Christmas cactus is dying?
A wilted, limp, drooping Christmas cactus with root rot will show wilted, limp, sagging growth, but an examination of the roots will reveal the truth.
Remove the plant from its pot with care. The roots of a rot-affected cactus will be dark at the tips. The decaying Christmas cactus roots will be sticky with black or brown decomposition, depending on the severity of the disease.
If you see that your Christmas cactus is rotting, you must act quickly. Rot is a fatal disease, and the only way to save the plant once it has progressed is to discard it and start over. You can generate a new plant using a leaf from a healthy area of the plant.
Will an overwatered cactus recover?
Unpot the cactus by putting a few layers of newspaper around it and tipping it out if you suspect overwatering and damage, such as soft brown spots, are visible on the outside. Brush the soil away from the roots and inspect them for any brown or black spots. It may be tough to repair extensive damage, but if the majority of the roots are still white, you’re in excellent condition. Remove the cactus from its pot and cut away the black and brown roots. You’ll need to reroot the cactus if there’s a lot of brown or black rot. A cactus that has just been over-watered once or twice can recover without further complications.