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.
When ought my Christmas cactus to be fertilized?
Beginning when you notice fresh growth at the end of winter or the beginnings of spring, fertilize the plant once a month after it has finished blooming. Give a 20-20-20 or 10-10-10 plant food diluted in water to 50% strength when feeding a Christmas cactus.
What affects the Christmas cactus does Epsom salt have?
QUESTION: I have a Christmas cactus, however it did not bloom during Christmas last year. Despite being incredibly vigorous and lush, it lacks blossoms. Epsom salts: Should I use them? I was informed that would be beneficial.
Epsom salts can enlarge a plant’s blooms, but they won’t result in flowers. Your plant could definitely benefit from frequent fertilizer. Fertilizing is typically required in the spring and summer. After that, allow the plant to rest for a bit in October and November. After nightfall, stow it away in a closet and leave it there. Only allow it to have indirect light when you take it outside throughout the day. Put it in direct light once the buds start to form, and it should start blooming in time for Christmas. A Christmas cactus is a tropical plant, not one that grows in a dry desert. Although it prefers moist soil, it dislikes being overwatered. Putting your plant in a slightly bigger pot might also be beneficial.
Which fertilizer is best for my Christmas cactus?
A half strength water soluble fertilizer, such as 20-20-20 or 20-10-20, or a bloom formula houseplant fertilizer work well as fertilizers for Christmas cacti. From late winter through late summer, feed once a month during routine watering. To promote flowering, you can also choose a time-release balanced plant food or one that is marginally richer in phosphorus once a month in mid to late summer.
Use one teaspoon of Epsom salts per gallon (5 cc for roughly 4 L) of water each month to fertilize on alternate weeks. This procedure will meet every fertilizer requirement for Christmas cacti, including the significant magnesium requirements of this epiphyte. Late summer is the time to stop fertilizing or flower yield may decrease. Since the plant is not actively growing in the winter, fertilizing is not necessary.
To lessen the likelihood of salt buildup in soil, closely adhere to the application rates on any formula. Set the plant in the shower and soak the soil to release any salt that has been stored if you are concerned about heavy salts. Before watering again, let the pot drain completely and the planting media dry out.
Miracle Grow: Is it suitable for Christmas cacti?
When Christmas cacti are tightly contained in their containers, they typically grow bigger and produce more flowers. But once the roots have nearly filled the pot, proceed as follows:
1. Choose a replacement pot with a drainage hole that is only 1 to 2 inches wider than the old one.
2. To help your Christmas cactus thrive straight away, fill the new container 1/3 full with Miracle-Gro Cactus, Palm & Citrus Potting Mix, which offers great drainage and a little amount of food.
3. After placing the plant in the pot, make sure the root ball’s top is positioned 3/4 to 1 inch or less below the pot’s rim.
4. Fill in the area around the rootball, leaving a gap of about 3/4 inch between the soil’s top and the container’s lip (for easy watering).
5. After giving the plant plenty of water, let it drain, then relocate it to a permanent location. (Place a water-resistant saucer underneath the pot to prevent spills on the furniture.)
Secret tip: After plants have recovered from blooming and begun to grow again in late spring, this is the ideal time to repot them.
How can I make my Christmas cactus more vibrant?
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.
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.
How should a Christmas cactus be watered—from the top or the bottom?
To ensure that the water reaches the Christmas cactus’ roots, irrigate it from the bottom up. Continue adding water to the soil until it begins to seep through the pot’s openings. It hydrates the ground.
Ensure that there is no standing water beneath the pot once the soil has been thoroughly moistened. Never leave excess water in the planter; you don’t want mold, root rot, or insects laying eggs there. If the water is fully separate from the pot and is in a tray underneath the pot, that’s acceptable.
Mist the Leaves
You can sprinkle the leaves with water in a spray bottle to keep them as healthy as possible. When watering the plant, misting the leaves only once will be sufficient to provide appropriate hydration.
Do eggshells work well with Christmas cacti?
Definitely. In order to flourish, plants require calcium just as much as they do phosphate and nitrogen. Additionally, using eggshells as fertilizer is a great way to feed your succulents and cacti calcium carbonate. You might want to retain those leftover eggshells rather than putting them in the garbage if you have a thing for these plants.
Plants require a small amount of calcium carbonate to maintain healthy cell walls and membranes, just like humans need calcium to maintain healthy muscles and bones.
Calcium so encourages growth when new cells are being formed. Additionally, calcium is crucial for supporting the formation of pollen tubes and roots.
Additionally real, calcium deficit in plants can be detected while new leaves are forming. The leaves could be malformed, and the tips could be gooey. A shortage of calcium can also result in the roots turning black, which can eventually kill the plant.
Are Christmas cactus fans of root binding?
Do Christmas cacti enjoy being rootbound? I was told not to repot it because it is currently healthy. D. Forrest
SUMMARY: Christmas cactus tolerates dense root systems well, so your friend isn’t entirely mistaken. Although Christmas cacti can still thrive after becoming rootbound, you should still repot your holiday plants every four years, expanding the container size by two inches each time.
Repotting a Christmas cactus can be difficult since, if the plant becomes rootbound, doing so might easily cause damage to the plant. Breaking the pot is the quickest way to remove it without harming the plant. It’s not a major loss because clay pots are inexpensive, and it’s much simpler to rehome your cactus without harming it.
If you notice your planter’s soil getting harder over time, observe roots poking out of the drainage hole or holes, or notice that the stems of your Christmas cactus are beginning to turn yellow or brown, your cactus may be root-bound (the latter symptom is also sometimes a sign of overwatering, not overcrowding). If you see these symptoms, you can leave your plant in its overcrowded container for a few more weeks or even months because it actually prefers the crowding. But ultimately, you’ll want to repot your cactus to give it more space and, in the process, provide it with newer, healthy soil.
To speed up water drainage, use potting soil designed specifically for cactuses and succulents. Fill the new, larger replacement planter with enough fresh soil so that the top of the root ball will rest about an inch below the rim. Remove a significant amount of the old soil from the roots and root ball by gently brushing off the root ball. To remove the majority of the oil soil from the roots and root ball, you can choose to wet or rinse them with water.
Then, carefully fill the space surrounding the root ball with the new, fresh potting soil that was designed for desert plants after placing your cactus in its new pot. While repotting, take out any stems that have yellowed or dried out. When the new dirt is securely planted, water your Christmas cactus thoroughly and choose a shaded location to put it for a few days so that it can get used to its new surroundings, the new soil, and the extra room.
During the spring and summer, keep your cactus in a shaded area of the porch or patio where they can receive plenty of fresh air and indirect sunshine. If you prefer, you can take a few cuttings each fall and give them out as gifts once they have grown. Bring them indoors in the fall and store them away from direct sunlight in a dry, dark area. Your Christmas cacti will thrive exceptionally well if you can create a slightly humid indoor environment.
Start drying the soil in October to promote blooming during the holiday season. Reduce the frequency of watering to only once every three weeks instead of once a week. For holiday blooms to flourish, darkness and dryness are both necessary conditions. To enhance the flowering of their Christmas cacti, some gardeners go so far as to cover their plants and keep them in the dark for a few weeks.