Some popular plants you prize for their ornamental beauty could be toxic killers

Last updated: June 10. 2014 8:37AM - 360 Views
By - rbaldwin@civitasmedia.com



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BELFRY, Ky. — Your garden may be a relaxing retreat, but it’s not a place to let your guard down, especially when it comes to small children and the family pet.


Some popular plants you prize for their ornamental beauty can turn into toxic killers within minutes if ingested, whether consumed out of curiosity or by mistake. With this list provided by the Master Gardener’s National Association, you’ll know what flowers, shrubs, and berries to warn young, inquisitive minds about and which bushes and flowers to keep out of paw’s reach. You’ll also learn the symptoms of poisoning because, after prevention, rapid treatment is the only defense against death.


Who knew both West Virginia and Washington’s state flower was a silent killer? Swallow any part of a Rhododendron, and you’re going to look as bad as you feel. While drooling from the mouth and teary-eyed, you’ll begin vomiting violently, just as your pulse slows down and low blood pressure sets in. Death can occur shortly after falling into a coma or during a violent seizure.


Lily of the Valley plants make for an attractive flower arrangement, but even the water you place cut lily-of-the-valley flowers in contains deadly traces of convallatoxin, which intensifies the heart’s contractions. Just a bite causes headaches, hot flashes, hallucinations, and irritability, not to mention red blotches on cold, clammy skin. The heart will also slow down, potentially leading to coma and death. The entire plant is toxic, especially the leaves.


The flower buds of the Hydrangea are extremely toxic, according to Master Gardner’s. Swallowing hydrangea is like popping a cyanide pill. The present poison, hydragin, is a cyanogenic glycoside, meaning it will cause shortness of breath, dizziness, fainting, and a rapid pulse, along with a drop in blood pressure that can cause convulsions and death.


Also known as poet’s daffodil, these pretty white bulb flowers, with a yellow center cup much smaller than the common daffodil’s, stand up to deer, rabbits, and voles better than other blooms, making them a prime choice for adding a bit of cheer to your beds. The entire plant, especially the bulbs, which are potent emetics, inducing vomiting.


If the scent of a narcissus bouquet in a closed room is strong enough to cause a headache, just imagine what eating an entire bulb might do. Think severe nausea, convulsions, fainting, paralysis and eventual death. Still want to plant them? Watch any open wounds you may have while tending to them—coming into contact with their bulb secretions has produced staggering, numbness, and heart paralysis.


The entire Foxglove plant, especially the leaves of the upper stem, which are rich in digitalin, digitoxin, and digitonin—chemicals, that while used medicinally, are deadly in high doses. The same thing that makes these lookers toxic to deer won’t sit well with your—or the family pet’s—digestive tract. Twenty minutes after a little nibbling, nausea, vomiting, and diarrhea set in. Depending on the amount ingested, untreated poisoning leads to death by bradycardia (lowered heart rate) or ventricular fibrillation (a rapid, irregular rhythm in the lower heart chambers). Keep in mind, however, that children have died just from sucking on a part of the plant.


Part of the buttercup family of flowers, Larkspur adds a high-impact, low-maintenance dose of color to your garden with its clustered blooms and colorful petals, typically ranging from white to blueish purple. The entire plant, though the young leaves and the mature seeds contain the highest concentration of toxic alkaloids. These enticing blue growers are definitely just for looking—not eating. Immediately after ingestion, nausea, burning in the mouth, vomiting, and slowing of the heartbeat set in. Seek treatment right away, because six hours is all it takes for this flower to become lethal.


The entire plant of the Oleander, including its nectar and sap, is extremely poisonous. Think twice about growing one of these babies in your yard, especially if you have little ones: a single leaf contains enough toxins to be lethal to an infant or small child. Like other poisonous plans, ingesting it first affects the digestive system with vomiting and diarrhea, then poisoning progresses into life-threatening circulatory problems. If your heart’s still ticking after that trauma, oleander can also deal a fatal blow to your central nervous system, causing seizures, tremors, and coma that can lead to death.


The milky sap found in the veins of the Poinsettia plant can also prove dangerous to humans and pets but despite its toxic reputation, poinsettias will never top the list of most poisonous plants, as there’s only been two documented cases of them causing human death. But you’ll want to teach kids not to touch or consume the plant, nonetheless. And as far as cats and dogs are concerned, keep poinsettia plants out of reach—unless you want to clean up after pet vomit and diarrhea. Take extra precautions if you have elderly, ill, or young pets.


The entire plant of the Purple Nightshade, particularly its berries, roots, and leaves are very poisonous. Don’t mess with this one. Pop a handful of berries in your mouth, and you’ll physically be unable to call for help. After you lose your voice, respiratory complications, intense digestive disruption, and violent convulsions begin, the combination of which has proven fatal.


A close cousin to azaleas and rhododendrons, Mountain Laurel is a shrub with large, round flower heads ranging from a reddish pink to white in color. It grows in tall thickets that also cover a large area of ground, making it a choice foundation plant to boost curb appeal.


Mountain Laurel parts are full of andromedotoxins, which go to town on your gastrointestinal tract. Watering of the mouth, eyes, and nose are common, as is shortness of breath and slow heartbeat. Kidney failure can occur, as well as convulsions, paralysis, coma, and death. Even the pollen from this beautiful plant can create a medical emergency.


Mistletoe is parasitic plant that grows out in the wild, you might spot some in your yard using a black poplar, ash, sycamore, or hawthorn as a host tree. A bough of mistletoe, with its sticky, white berries, has long been used as a traditional decoration indoors during the Christmas season. Munching on a couple of leaves, berries, or shoots—or drinking mistletoe-flavored tea—will cause abdominal pain and diarrhea. Cases where mistletoe ingestion were fatal involved gastroenteritis (an inflammation of the stomach and small intestine), followed by cardiovascular collapse. The berries are particularly potent when it comes to pets, so mind your cats and dogs around this plant.


Water Hemlock/Spotted Parsley, is an unintended by not uncommon garden trespasser—with its small, white flowers growing in umbrella-like clusters—this perennial doesn’t look too menacing. It may be growing on the edges of your property, especially if you live near a meadow, pasture, or stream. The whole plant, especially the roots of early growth are the most poisonous. This wildflower has been dubbed “the most violently toxic plant that grows in North America” by the USDA. True to its killer reputation, water hemlock can strike you dead within 15 minutes of ingestion. The poison cicutoxin wastes no time in attacking the central nervous system, causing severe seizures and convulsions that turn deadly as a result of asphyxia and cardiovascular collapse.


While everyone loves a beautifully landscaped yard with bursts of colors from a variety of plants, think before you plant. Be smart and be safe.

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