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Dummer. ゛☀
2017年08月17日
Dummer. ゛☀
Unlike typical desert cacti, Christmas cactus is native to the tropical rain forest. Although the climate is damp for much of the year, the roots dry quickly because the plants grow not in soil, but in decayed leaves in the branches of trees. Christmas cactus problems are usually caused by improper watering or poor drainage.
Christmas Cactus Fungal Issues Rots, including basal stem rot and root rot, are the most common problems affecting Christmas cactus. Stem rot – Basal stem rot, which generally develops in cool, damp soil, is easily recognized by the formation of a brown, water-soaked spot at the base of the stem. The lesions eventually travel up the stem of the plant. Unfortunately, basal stem rot is usually deadly because treatment involves cutting the diseased area from the base of the plant, which removes the supportive structure. The best recourse is to start a new plant with a healthy leaf. Root rot – Similarly, plants with root rot are difficult to save. The disease, which causes the plants to wilt and eventually die, is identified by a wilted appearance and soggy, black or reddish brown roots. You may be able to save the plant if you catch the disease early. Remove the cactus from its pot. Rinse the roots to remove the fungus and trim rotten areas. Repot the plant in a pot filled with a potting mix formulated for cacti and succulents. Be sure the pot has a drainage hole. Fungicides are often ineffective because specific pathogens are difficult to identify, and each pathogen requires a different fungicide. To prevent rot, water the plant thoroughly, but only when the potting soil feels slightly dry. Let the pot drain and don’t allow the plant to stand in water. Water sparingly during the winter, but never let the potting mix become bone dry.
Other Diseases of Christmas Cactus Christmas cactus diseases also include botrytis blight and impatiens necrotic spot virus. Botrytis blight – Suspect botrytis blight, also known as grey mold, if the blooms or stem are covered with silvery gray fungus. If you catch the disease early, removal of infected plant parts may save the plant. Improve ventilation and reduce humidity to prevent future outbreaks. Necrotic spot virus – Plants with impatiens necrotic spot virus (INSV) display spotted, yellow or wilted leaves and stems. Use appropriate insect control, as the disease is usually transmitted by thrips. You may be able to save diseased plants by moving them into a clean container filled with fresh, pathogen-free potting mix.
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Dummer. ゛☀
2017年08月17日
Dummer. ゛☀
Christmas cactus is a long-lived plant with bright blooms that appear around the winter holidays. Normally, blooms last at least one to two weeks. If conditions are just right, the impressive flowers may hang around for seven to eight weeks. Although the plant is relatively low-maintenance, dropping or wilting Christmas cactus blooms are usually an indication of improper watering or sudden temperature changes.
Flower Wilt on Christmas Cactus Christmas cactus bloom wilt is often caused by excessively dry soil. Be careful and don’t over-correct, as watering a Christmas cactus can be tricky and too much moisture may cause more serious problems, such as stem or root rot, which are usually deadly. For most of the year, you shouldn’t water the plant until the soil feels slightly dry, and then water deeply so the entire root ball is saturated. Let the pot drain thoroughly before replacing the plant on a drainage saucer. However, it’s important to note that slightly different tactics are needed when the plant begins to bloom. During the blooming period, water just enough to keep the potting mix consistently moist, but never soggy or bone dry. Don’t water deeply during this time, as soggy roots may cause blooms to wilt and drop. Don’t fertilize the plant while it is blooming either. From October on through winter, Christmas cactus prefers cool nighttime temperatures between 55 and 65 F. (12-18 C) during the blooming period. Keep the plant away from cold drafts, as well as fireplaces or heat vents. Christmas cactus also needs relatively high humidity, which replicates its natural, tropical environment.
If the air in your home is dry during the winter months, place the pot on top of a layer of pebbles in a plate or tray, then keep the pebbles moist to increase the humidity around the plant. Be sure the pot is standing on the moist pebbles and not in the water, as water wicking into the soil through the drainage hole can cause the roots to rot.
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Dummer. ゛☀
2017年08月17日
Dummer. ゛☀
Christmas cacti are common gifts around the holidays. They tend to bloom in the winter, with showy flowers present for friends and family to admire as they attend winter festivities. The presence of small children and pets at family functions reminds us that not all plants are safe. Is Christmas cactus toxic? Read on to find out and help protect your pets from any Christmas cactus toxicity.
Is Christmas Cactus Toxic? The bright salmon to red flowers and intricate pads are characteristic of the Christmas cacti, which tends to bloom around Christmas and gives them their name. The plant is not a true cactus, however, but an epiphyte. It needs bright light and well-drained soil, with moderate water needs. To ensure blooming, withhold water in October and gradually resume again in November. Good news! Unlike many of the holiday plants, Christmas cactus toxicity is not damaging. Mistletoe, holly (berries) and poinsettia are also common during the winter holidays and do have some toxic components, but it is safe to have the Christmas cactus in your home. It isn’t even spiny, so you don’t have to worry about sharp pointy things hurting mouthy dogs and curious cats.
Care of Christmas Cactus Around Pets Christmas cactus is native to Central and South America. They are classed as Zygocactus, a form of epiphyte that has a similar appearance to traditionally recognized cacti. Epiphytes don’t need a soil based medium to live in but can survive in tree crotches and rocky depressions where organic material has collected and composted down to a rich humic base. Most Christmas cacti are sold in a soil medium which is well-draining. Care of Christmas cactus around pets is similar to that of any tropical plant. They require deep watering followed by allowing the top few inches of soil to dry out before applying moisture anew. The key to achieving bright blooms each year is to allow the plant to dry out in fall and winter. Move the plant to where it receives bright light and ensure temperatures are fairly cool. Ideal temperatures for flowering are 50 degrees Fahrenheit (10 C). Apply a 0-10-10 fertilizer in October to early November and reapply in February. Although, it is best to train animals not to sample plants in the home, no harm will come to them if they want to try a flower or a bite of foliage. Christmas cactus and pets make perfect housemates as long as your animal doesn’t over eat the plant and destroy its health. Christmas cactus and pets can coexist in harmony in the home but preventive measures on other holiday plants should be taken. Place plants, such as poinsettia, up high where animals can’t reach them. If the family pet is especially persistent, spray the plant with cayenne pepper dissolved in water. The spicy taste will make Fido or Kitty think twice about approaching any plant and avoid poisoning but also safeguard the plant from teething damage and foliar death.
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Dummer. ゛☀
2017年08月17日
Dummer. ゛☀
Christmas cactus is a striking plant with bright pink or red blooms that add festive color around the winter holidays. Unlike typical desert cactus, Christmas cactus is a tropical plant that grows in the Brazilian rainforest. The cactus is easy to grow and a cinch to propagate, but Christmas cactus has some unusual attributes that may cause you to wonder what’s going on with your plant. Let’s learn more about roots growing from Christmas cactus plants.
Why Christmas Cactus Has Aerial Roots If you notice root-like growths on Christmas cactus, don’t be overly concerned. Christmas cactus is an epiphytic plant that grows on trees or rocks in its natural habitat. The roots growing from Christmas cactus are actually aerial roots that help the plant cling to its host. The plant is not a parasite because it doesn’t depend on the tree for food and water. This is where the roots come in handy. Christmas cactus aerial roots help the plant reach sunlight and absorb necessary moisture and nutrients from leaves, humus and other plant debris that surround the plant.
These natural survival mechanisms can give you clues why your potted Christmas cactus is developing aerial roots. For example, low light can cause the plant to send out aerial roots in an attempt to absorb more sunlight. If this is the case, moving the plant into brighter sunlight may diminish the growth of aerial roots. Similarly, the plant may develop aerial roots because it is reaching out to find more water or nutrients. Water the plant deeply whenever the top 1 to 2 inches of potting soil feels dry to the touch. Water sparingly during fall and winter, providing just enough moisture to keep the plant from wilting. Feed the plant once every month, beginning in late winter or early spring, using a regular houseplant fertilizer. Stop fertilizing in October when the plant is preparing to bloom.
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Dummer. ゛☀
2017年08月17日
Dummer. ゛☀
Does your cat think the dangling stem of a Christmas cactus makes an excellent toy? Does he/she treat the plant like a buffet or a litter box? Read on to find out how to handle cats and Christmas cactus.
Christmas Cactus & Cat Safety When your cat eats a Christmas cactus, your first concern should be the health of the cat. Is Christmas cactus bad for cats? The answer depends on how you grow your plants. According to the ASPCA plant database, Christmas cactus is not toxic or poisonous to cats, but insecticides and other chemicals used on the plant may be toxic. In addition, a sensitive cat eating Christmas cactus may suffer an allergic reaction. Carefully read the label of any chemicals you may have recently used on the plant. Look for cautions and warnings as well as information about how long the chemical remains on the plant. Contact your vet if you have any concerns. Cats love the feel of their paws in dirt, and once they discover this pleasure, it’s hard to keep them from digging in your plants and using them as litter boxes. Try covering the potting soil with a layer of pebbles to make it hard for kitty to dig down to the soil. For some cats, cayenne pepper sprinkled liberally over the plant and the soil acts as a deterrent. Pet stores sell a number of commercial cat deterrents. One of the best ways to keep the cat out of a Christmas cactus is to plant it in a hanging basket. Hang the basket where the cat can’t reach it, even with a well-executed and carefully planned jump.
Christmas Cactus Broken By Cat When the cat breaks stems off of your Christmas cactus, you make new plants by rooting the stems. You’ll need stems with three to five segments. Lay the stems aside in an area out of direct sunlight for a day or two to let the broken end callus over. Plant them an inch deep in pots filled with potting soil that drains freely, such as cactus potting soil. Christmas cactus cuttings root best when the humidity is very high. You can maximize the humidity by enclosing the pots in a plastic bag. Cuttings root in three to eight weeks. Cats and Christmas cactus can live in the same house. Even if your cat isn’t showing any interest in your plant right now, he/she may take an interest later. Take steps now to prevent damage to the plant and harm to the cat.
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Dummer. ゛☀
2017年08月16日
Dummer. ゛☀
Christmas cactus is a hardy tropical cactus that brightens the environment with gorgeous, red and pink blooms around the winter holidays. Although Christmas cactus is easy to get along with and requires minimal care, it is susceptible to root rot. Usually, this dreaded fungal disease is not caused by inattention, but is the result of improper watering.
Signs of Root Rot in Christmas Cactus A holiday cactus with root rot displays wilted, limp, sagging growth, but an inspection of the roots will tell the tale. Remove the plant gently from its pot. If the cactus is affected by rot, the roots will display blackened tips. Depending on the severity of the disease, rotten Christmas cactus roots will be slimy with black or brown decay. If you determine that your Christmas cactus is rotting, it’s critical to act fast. Rot is a deadly disease and once it progresses, the only option is to discard the plant and start fresh. If part of the plant is healthy, you can use a leaf to propagate a new plant.
Treating a Holiday Cactus with Root Rot If you catch the disease early, you may be able to save it. Remove the Christmas cactus from the container immediately. Trim away affected roots and rinse the remaining roots gently to remove fungus. Place the plant on a paper towel and put it in a warm, well-ventilated location so the roots can dry overnight. Place the Christmas cactus in a dry pot with fresh, lightweight potting soil the next day. Be sure the pot has a drainage hole so the soil can drain freely. Wait a couple of days before watering the newly potted Christmas cactus. When you resume watering, be sure you understand the most effective way to irrigate your Christmas cactus. Always water thoroughly until water drips through the drainage hole, then let the plant drain before returning the pot to its drainage saucer. Never let the plant stand in water. Be careful not to kill the plant with kindness; slightly underwatered conditions are healthiest. Don’t water until the top ½ inch of soil feels dry. Water sparingly during the winter months, but don’t allow the potting mix to become bone dry. Place the plant in bright sunlight during fall and winter and in light shade during spring and summer.
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Dummer. ゛☀
2017年08月16日
Dummer. ゛☀
Can I plant my Christmas cactus outside, you ask? Can Christmas cactus be outside? The answer is yes, but you can only grow the plant outdoors year round if you live in a warm climate because Christmas cactus is definitely not cold hardy. Growing Christmas cactus outdoors is possible only in USDA plant hardiness zones 9 and above. How to Grow a Christmas Cactus Outside If you live in a cool climate, plant Christmas cactus in a container or hanging basket so you can bring it indoors when temperatures fall below 50 F. (10 C.) Use a well-drained potting medium such as a mixture of potting soil, perlite and orchid bark. A location in light shade or early morning sun is best for growing Christmas cactus outdoors in warmer climates, although a sunnier location is suitable in fall and winter. Beware of intense light, which may bleach the leaves. Temperatures between 70 and 80 F. (21-27 C.) are ideal during the growing season. Be careful of sudden changes in light and temperatures, which may cause the buds to drop. Christmas Cactus Outdoor Care As part of your care of Christmas cactus outside, you’ll need to water Christmas cactus when the soil is on the dry side, but not bone dry. Don’t overwater Christmas cactus, especially during the winter months. Soggy soil may result in rot, a fungal disease that is usually deadly. Christmas cactus outdoor care involves regular inspection for pests. Watch for mealybugs – tiny, sap-sucking pests that thrive in cool, shady conditions. If you notice telltale white cottony masses, pick them off with a toothpick or a cotton swab dipped in alcohol. A Christmas cactus growing outdoors is also susceptible to aphids, scale and mites, which are easily removed by periodic spraying with insecticidal soap spray or neem oil. Trim Christmas cactus in early summer by removing two or three segments. A regular trim will promote full, bushy growth.
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Dummer. ゛☀
2017年08月16日
Dummer. ゛☀
Christmas cactus are relatively trouble-free succulent plants, but if your Christmas cactus leaves are red or purple instead of green, or if you notice Christmas cactus leaves turning purple on edges, your plant is telling you that something isn’t quite right. Read on to learn about possible causes and solutions for reddish-purple Christmas cactus leaves.
Why Do Christmas Cactus Leaves Turn Purple? Oftentimes, a purplish tint to your Christmas cactus leaves is normal. That said, if it’s noticeably throughout the leaves, it may signal an issue with your plant. Below are the most common reasons for leaves becoming red or purple on Christmas cacti: Nutritional issues – If you don’t fertilize your Christmas cactus regularly, the plant may be lacking necessary nutrients. Feed the plant monthly from spring until mid-autumn with a general purpose fertilizer for indoor plants. Additionally, because Christmas cacti require more magnesium than most plants, it normally helps to provide a supplemental feeding of 1 teaspoon of Epsom salts dissolved in one gallon of water.
Apply the mixture once every month throughout spring and summer, but don’t use the Epsom salt mixture the same week you apply regular plant fertilizer. Crowded roots – If your Christmas cactus is rootbound, it may not be absorbing nutrients effectively. This is one possible reason for reddish-purple Christmas cactus leaves. Keep in mind, however, that Christmas cactus thrives with crowded roots, so don’t repot unless your plant has been in the same container for at least two or three years. If you determine that the plant is rootbound, repotting Christmas cactus is best done in spring. Move the plant to a container filled with a well-drained potting mix such as regular potting soil mixed with perlite or sand. The pot should be just one size larger. Location – Christmas cactus requires bright light during fall and winter, but too much direct light during the summer months may be the reason for Christmas cactus leaves turning purple on edges. Moving the plant to a more appropriate location may prevent sunburn and solve the problem. Be sure the location is away from open doors and drafty windows. Similarly, avoid hot, dry areas such as near a fireplace or heating vent.
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Dummer. ゛☀
2017年08月16日
Dummer. ゛☀
Christmas cactus is a familiar plant that produces masses of colorful blooms to brighten the environment in the darkest days of winter. Although Christmas cactus is relatively easy to get along with, it isn’t uncommon to notice a Christmas cactus with yellow leaves. Why do Christmas cactus leaves turn yellow? There are several possible reasons for yellow Christmas cactus leaves.
Troubleshooting a Christmas Cactus with Yellow Leaves If you notice your Christmas cactus leaves turning yellow, consider the following possibilities: Time to repot – If the container is packed tightly with roots, the Christmas cactus may be potbound. Move the Christmas cactus to a pot one size larger. Fill the pot with a mixture that drains well, such as two parts potting mix and one part coarse sand or perlite. Water well, then withhold fertilizer for a month after repotting a Christmas cactus. However, don’t rush to repot because this plant actually thrives in a crowded pot. As a general rule, don’t repot unless it’s been at least two or three years since the last repotting.
Improper watering – Yellow Christmas cactus leaves may be a sign that the plant has a disease known as root rot, which is caused by excessive watering or poor drainage. To check for root rot, remove the plant from the pot and inspect the roots. Diseased roots will be brown or black, and they may have a mushy appearance or a musty odor. If the plant has rot, it may be doomed; however, you can attempt to save the plant by trimming the rotted roots and moving the plant to a clean pot with fresh potting mix. To prevent root rot, water only when top 2 to 3 inches of soil feel dry to the touch, or if the leaves look flat and wrinkly. Decrease watering after blooming, and provide only enough moisture to prevent the plant from wilting. Nutritional needs – Christmas cactus leaves turning yellow may be an indication that the plant is lacking necessary nutrients, especially if you don’t fertilize regularly. Feed the plant monthly from spring until mid-autumn using an all-purpose liquid fertilizer. Additionally, Christmas cactus is said to have a high magnesium requirement. As such, some resources recommend a supplemental feeding of 1 teaspoon of Epsom salts mixed in one gallon of water applied once monthly throughout spring and summer.
Stagger feedings and don’t apply the Epsom salt mixture the same week you apply regular plant fertilizer. Too much direct light – Although Christmas cactus benefits from bright light during fall and winter, too much sunlight during the summer months can give the leaves a yellow, washed-out appearance. Now that you know why leaves turn yellow on Christmas cactus, this problem need not be frustrating anymore.
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Dummer. ゛☀
2017年08月16日
Dummer. ゛☀
Help! My Christmas cactus has bugs! Christmas cactus is a relatively low-maintenance, pest-resistant plant, but it can fall victim to a number of harmful pests. If you notice tiny bugs in Christmas cactus, take heart. Most pests of Christmas cactus are easily eliminated. Water and fertilize as necessary, and keep in mind that healthy plants are more resistant to Christmas cactus insects. Read on to learn more about bugs in Christmas cactus.
Treating Christmas Cactus Insects Here are some common pests of Christmas cactus and how to deal with them: Spider Mites – These Christmas cactus pests are so tiny, they are difficult to see with the naked eye. However, is you see fine webbing or fine speckles on the leaves, you can bet your Christmas cactus is infested with spider mites. Spider mites are usually easy to resolve with regular application of insecticidal soap spray. Keep the leaves clean, as mites are attracted by dusty conditions. Mealybugs – Mealybugs are an annoying pest, common on indoor plants. Although the tiny bugs on Christmas cactus are tiny, they are easy to spot by the protective cottony masses, which are usually seen at the joints of leaves and stems, or on the undersides of leaves. The bugs, which suck the sap from the leaves, grow larger as they mature.
If left untreated, they leave a sticky substance that attracts mold. To remove mealybugs, pick them off with a toothpick or soft toothbrush. You can also use a cotton swab dipped in rubbing alcohol, but be careful; too much rubbing alcohol may damage the leaves. If all else fails, you may want to try a systemic insecticide formulated for indoor plants. Scale – These Christmas cactus insects can suck the sweet juices and decimate a plant in a hurry.
Scale is recognized by the waxy outer covering, usually on the undersides of leaves and stems. In its early stages, you can simply scrape the waxy substance from the leaves. Insecticidal soap is also effective. In case of large infestations, systemic insecticides may be the best solution. Fungus gnats – Tiny, flying pests, fungus gnats are usually more annoying than harmful, although large infestations can cause loss of leaves and an overall unhealthy appearance. Try insecticidal soap spray first, as this may be enough to keep fungus gnats in check. You may need to repot the plant in a clean pot filled with fresh, well-drained potting mix, then be careful not to overwater, as gnats are attracted to soggy soil.
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