Deceptively attractive, some common flowers and plants can give you headaches, cause convulsions or simply kill you, according to the "Handbook of Poisonous and Injurious Plants" (Springer, 2007). Children under 6 are especially vulnerable; they account for 85 percent of all calls to poison centers, though the most commonly consumed culprits in poison cases are cosmetics, personal care products, cleansers and pills. Most plants are safe, but here are some you need to know about. They might be in your own yard or even in the house. - Robin Lloyd
Deceptively attractive, some common flowers and plants can give you headaches, cause convulsions or simply kill you, according to the "Handbook of Poisonous ... more
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1
Wisteria
Wisterias form romantic cascades of sweetpea-like flowers that fall in lush blue, pink or white masses from woody vines that grow mainly in the South and Southwest. The entire plant, also known as a kidney bean tree, is toxic, though some say the flowers are not. Better safe than sorry, because most reports are that eating this plant will cause nausea, vomiting, cramps and diarrhea that could require treatments such as intravenous hydration and anti-nausea pills.
2
Foxglove
Foxglove is a magical looking plant that grows to 3 feet tall with drooping purple, pink or white flowers, sometimes dotted inside, along a central stalk. Its Latin name is Digitalis purpurea, which might sound familiar; leaves from the plant are a commercial source of the heart drug digitalis. If you eat any part of these plants in the wild, you too will likely have heart problems after a spell of nausea, vomiting, cramps, diarrhea and pain in the mouth. A doctor might administer charcoal to absorb the toxin or pump your stomach, and might also administer drugs to bring your heart rate back to normal. Other names for this plant include fairy bells, rabbit flower, throatwort and witches' thimbles.
3
Hydrangea
These poofy-flowered bushes (Hydrangea macrophylla) are popular yard ornaments that can grow up to 15 feet tall with rose, deep blue or greenish-white flowers that grow in huge clusters and look as edible as cotton candy or a big bun to an imaginative mind. But those blooms will give you a belly ache that sets in sometimes hours after eaten. Typically, patients also experience itchy skin, vomiting, weakness and sweating. Some reports indicate that patients can even experience coma, convulsions and a breakdown in the body's blood circulation. Luckily, there is an antidote for hydrangea poisoning, and doctors might also give you drugs to address to ease your symptoms.
4
Lily-of-the-valley
These darling droopers, also known as mayflowers, are entirely poisonous, from the tips of their tiny bell-shaped white flowers that coyly fall off like parted hair to the very water in which they might be placed. A little bit of Lily-of-the-valley (Convallaria majalis) probably won't hurt much, but if you eat a lot, you'll probably experience nausea, vomiting, pain in the mouth, abdominal pain, diarrhea and cramps. Your heart rate might also become slow or irregular. A doctor might decide to clean out your stomach by pumping it or feeding you absorbing charcoal, and might give you drugs to bring your heart rate back to normal.
5
Anthurium
The leaves and stems of these bizarre-looking plants, with dark green, heart-shaped leathery leaves and a scarlet, white or green spike surrounded by a red, pink or white "spathe," are toxic. Also known as flamingo flowers or pigtail plants, eating tropical Anthuriums could give you a painful burning sensation in the mouth that then swells and blisters. Your voice might also become hoarse and strained and you might have difficulty swallowing. Most of this will fade with time, but cool liquids, pain pills and gluey herbs and foods like licorice or flaxseeds may bring relief.
6
Chrysanthemum
Also known as mums, orange and yellow varieties of these showy flowers often turn up in foil-wrapped pots on people's front steps around Halloween and Thanksgiving. There are 100 to 200 species of Chrysanthemums, and they generally grow low to the ground, but can turn into shrubs. Gardeners plant mums to keep rabbits away. Guess what? The flower heads are somewhat toxic to humans too. But not terribly. Touching them can make you itch and puff up a bit, but probably the doctor will just give you something for the inflammation and allergic reaction.
7
Oleander
Every bit of the oleander plant is toxic, unlike the case for other plants where just the flower or sap might be poisonous. Even accidental inhalation of the smoke from burning oleander is a problem. Other trouble comes from using the sticks for weenie or marshmallow roasts or drinking water in which the clusters of red, pink or white flowers have been placed. These evergreen shrubs (Nerium oleander is shown) are common as tub plants or in gardens in the Southwest and California, any locale that approaches the plant's native Mediterranean climate. Typically the symptoms involve a change in heart rate, be it a slow down or palpitations or high potassium levels. A doctor might prescribe a drug to bring your heartbeat back under control and try to induce vomiting with ipecac, pump your stomach or absorb the toxin with ingested charcoal.
8
Ficus
Also known as weeping fig, benjamin tree, or small-leaved rubber plants, all ficus have milky sap in their leaves and stems that is toxic. There are about 800 species of ficus trees, shrubs and vines (Ficus benjamina is shown), many of which are cultivated indoors in pots and tubs and outdoors in warm areas where some varieties can grow to up to 75 feet tall. The worst that will happen is your skin will itch and puff up and your doctor will give you something for the allergy or the inflammation.
9
Rhododendron
Rhododendrons and azalea bushes (a variety of rhododendron), with their bell-shaped flowers, look great in the yard come springtime, but the leaves are toxic and so is honey made from the flower nectar. Eating either from these evergreen shrubs makes your mouth burn, and then you'll probably experienced increased salivation, vomiting, diarrhea and a tingling sensation in the skin. Headaches, weak muscles and dim vision could follow. Your heart rate could slow down or beat strangely, and you might even drop into a coma and undergo fatal convulsions. Before that, doctors will try to replace your fluids and help you breath more easily and administer drugs to bring back your normal heart rhythm.
10
Narcissus
These cheerful yellow and white harbingers of spring, aka daffodils and jonquils, are actually mildly toxic if the bulbs are eaten in large quantities (Narcissus pseudonarcissus is shown). Some people confuse them for onions. Daffodil bulb diners tend to experience nausea, vomiting, cramps and diarrhea. A doctor might recommend intravenous hydration and/or drugs to stave off nausea and vomiting if symptoms are severe or the patient is a child.
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