Below is a list of the safe variety of plants indoor and outdoor which have been reported as having no adverse affects on animals. Tropical ferns survive best in homes with central heating. Scientists have already shown that the PTQs ingested from eating bracken can increase your chances of getting gastric and oesophageal cancer. What is more, PTQs are attracted towards water, so tend to concentrate in the buttermilk, rather than enter the cream, butter and cheese that will have been made from the fat that was skimmed off. Cyclamen. In Brazil and Japan young bracken shoots are often used in salads and cooking. Given that crops are often planted on sandy soils with a high water table, some crops could have an even worse effect on the water supply than bracken. Remember, they are ornamental plants, often very beautiful - they are not meant to be eaten. Small villages and farms are most vulnerable because they often take their water from just one source. Poinsettia is often said to be very toxic, but the potency of this plant is often greatly exaggerated. What plants are poisonous? Asparagus fern, also known as lace, emerald or plumosa fern, deserves a special mention because it is such a popular houseplant. You may not be surprised to get cancer if you smoke, or drink too much alcohol, but no one expects to get it from drinking water. Some types of ferns are poisonous to dogs. If it is not a food plant, do not eat it. Soil type is also important in helping or hindering PTQ to travel. It contains small berries that are toxic to dogs, in addition to the leaves. Another plant that is toxic to horses are bracken ferns. "The young ferns are quite tasty, a bit like asparagus with almonds," says Holm Rasmussen. Throughout the 1980s and 1990s doctors recorded a higher than average incidence of people suffering from gastric cancer in the county of Gwynedd, north Wales. For a long time scientists have known that bracken contains a carcinogenic compound called ptaquiloside (PTQ), but thought it dangerous only if eaten. Yes, many are toxic. Farmers often keep the buttermilk for their family, giving it to their children as a healthy drink. Now he has shown that eating bracken isn't the only way of ingesting PTQs. This list is a compilation of several different lists printed by various bird clubs and magazines and some local common knowledge about plants that are non-toxic and safe for birds. Bracken is polluting water supplies worldwide - and causing cancer. In the meantime, don't give up drinking water but do keep trampling down the bracken when you're out for a walk. Further afield PTQ contamination may also explain gastric and oesophageal cancer hot spots in South America. Daffodil Elderberry Lamb’s Quarters. Azalea. The Royal Horticultural Society is the UK’s leading gardening charity. What is perhaps more concerning is that it may not just be bracken that we need to worry about. "Poisonous" does not mean deadly. Credit: RHS/Graham Titchmarsh. Asparagus fern. Range: Coast to coast, except for the Mediterranean and desert climates of Southern California and the Southwest. Last year Holm Rasmussen measured the concentration of PTQs in water from wells on Danish and Swedish farms, which had lots of bracken growing in the area. African violets (Saintpaulia) are one of the most popular flowering houseplants, due … New research, being presented at the British Ecological Society Annual Meeting in Lancaster this week, has revealed that a common fern may be poisoning water supplies all over the world. These do not affect everyone, but some individuals may acquire sensitivity to them, resulting in an allergic reaction, A very small number of plants have sap which renders the skin excessively sensitive to strong sunlight. Most horses will leave bracken ferns alone as long as there are other food sources available, but horses do funny things, so it’s best to eliminate ferns from your pasture to avoid issues. Glugging plenty of glasses each day is supposed to be good for us, but now you might want to think twice before turning on the tap. The wispy fronds of the Boston fern are often enticing toys to cats and kittens. Advice & Information. Some garden plants present a hazard, but the risk of severe poisoning, skin reaction or allergy is generally low. Dogs that eat the berries of this plant are likely to undergo abdominal distress. Bracken fern also contains thiaminase, an enzyme that causes vitamin B to become inactive. 020 3176 5800 RHS Garden Hyde Hall Spring and Orchid Show, Free entry to RHS members at selected The story is likely to be similar for many other farms and villages worldwide, where water is sourced from a bracken-strangled borehole or well. Toxic Principle Bracken fern has been associated with a variety of different syndromes in animals and people, the best recognized of which include: 1. Sandy soils act like motorways to the water supply, while peat soils and chalks are more like very windy country roads. Due to changes in farming practices over the past hundred years, bracken has proliferated and now it sprawls across much of Scotland and northern Britain. Acalypha  (chenille plant, copperleaf) - skin & eye irritant; poisonousAcokanthera (bushman’s poison) - poisonousAconitum (monkshood) - poisonous; irritant to and via the skinActaea section Actaea (baneberry) - poisonous; irritant to and via the skinAesculus (horse chestnut) - somewhat poisonousAglaonema (Chinese evergreen) - poisonous; skin irritant Agrostemma githago (corncockle) - somewhat poisonousalder buckthorn - see RhamnusAllamanda - poisonous; skin & eye irritantAlocasia (taro) -  poisonous; skin & eye irritantAloe - poisonousAlstroemeria (Peruvian lily) - skin irritantAmaryllis - see HippeastrumAmaryllis belladona (belladonna lily) - poisonousAngel’s trumpet - see BrugmansiaAngel’s wings - see CaladiumAnthurium (flamingo flower) - poisonous; skin & eye irritantApocynum (dogbane) -  poisonousArisaema (cobra-lily) - poisonous; skin & eye irritantArrowhead vine - see SyngoniumArum (cuckoo-pint, lords-and-ladies) - poisonous; skin & eyeirritantAsparagus (asparagus fern) - may cause skin allergy, fruitspoisonousAsparagus fern See AsparagusAtropa (deadly nightshade) - poisonous; skin irritantAutumn crocus See ColchicumBaneberry - see Actaea section ActaeaBelladonna lily - see Amaryllis belladonaBluebell - see HyacinthoidesBottle gourd - see LagenariaBrugmansia (angel’s trumpet) - poisonousBrunfelsia (yesterday, today and tomorrow) - poisonousBuckthorn - see RhamnusBunny ears cactus - see Opuntia microdasysBurning bush - see DictamnusBushman’s poison - see AcokantheraCaladium (angel’s wings) - poisonousCalico bush - see KalmiaCalla lily - see ZantedeschiaCalla palustris (water arum) - poisonous; skin & eye irritantCapsicum annum (ornamental pepper cultivars)- skin & eye irritant;poisonousCastor oil plant - see Ricinus communisCelandine, greater - see Chelidonium majusChalice vine - see SolandraChaste tree - see VitexChelidonium majus (greater celandine) -  poisonous; skin & eye irritantChenille plant - see Acalypha Cherry laurel - see Prunus laurocerasusChincherinchee - see OrnithogalumChinese evergreen - see AglaonemaChristmas cherry - see Solanum pseudocapsicumChrysanthemum - skin irritantCobra-lily - see ArisaemaColchicum (autumn crocus) - poisonousColocasia esculenta (dasheen, eddo, taro) - poisonous; skin & eye irritantComfrey, Russian comfrey - see SymphytumConvallaria majalis (lily-of-the-valley) - poisonousCopperleaf - see AcalyphaCoriaria - poisonousCorncockle - see Agrostemma githagoCrepe jasmine - see TabernaemontanaCuckoo-pint - see Arumx Cuprocyparis leylandii (Leyland cypress) - skin irritantDaffodil - see NarcissusDaphne (mezereon, spurge laurel) - poisonous; skin irritantDasheen - see Colocasia esculentaDatura (thornapple) - poisonous; skin irritantDeadly nightshade - see AtropaDelphinium including Consolida (larkspur) - poisonousDendranthema - see ChrysanthemumDevil’s ivy - see EpipremnumDictamnus (burning bush) - skin irritantDieffenbachia (dumb cane, leopard lily) - poisonous; skin & eye irritantDigitalis (foxglove) - poisonousDogbane - see ApocynumDracunculus (dragon arum) - poisonous; skin & eye irritantDragon arum - see DracunculusDumb cane - see DieffenbachiaEchium - skin irritantEddo - see Colocasia esculentaElder - see SambucusEpipremnum (devil’s ivy) - poisonous; skin & eye irritantEuonymus (spindle tree) - somewhat poisonousEuphorbia (spurge, poinsettia) - poisonous; skin & eye irritant NB: Poinsettia (E. pulcherrima) is considerably less toxic than other Euphorbia species. Whilst it may not be as poisonous as you think, it can still cause excessive salivation and sometimes vomiting. Kate Ravilious reports on a shocking discovery. The danger: Bracken fern contains thiaminase, which inhibits absorption of thiamin, which is vitamin B1. Bracken fern is toxic throughout the plant; it contains rhizomes, which are toxic roots that spread and shoot out to form new growth underground. "PTQ is washed out of the bracken fronds by rain and since the bracken has the most biomass in summer, this is when we find the highest concentra tions of PTQ in water," he explains. striata, R. toxicarium, R. vernix (Japanese lacquer tree, Poison ivy, Sumach) - poisonous; severe skin irritantRicinus communis (castor oil plant) - poisonousRobinia pseudoacacia (locust tree) - poisonousRuta (rue) - severe skin irritant in bright sunlightSt John’s wort - see Hypericum perforatumSambucus except S. nigra (elder) - poisonousSchefflera (Umbrella tree) - skin irritantScilla - somewhat poisonousScopolia - poisonousSkunk cabbage - see LysichitonSnowberry - see SymphoricarposSolandra (chalice vine) - poisonousSolanum - poisonousSolanum pseudocapsicum (Christmas cherry, winter cherry) - poisonousSolomon’s seal - See PolygonatumSophora (pagoda tree) - poisonousSpanish broom - see Spartium junceumSpartium junceum (Spanish broom) - poisonousSpathiphyllum (peace lily) - poisonous; skin & eye irritantSpindle tree - see EuonymusSpurge - see EuphorbiaSpurge laurel - see DaphneStar-of-Bethlehem - see OrnithogalumSumach - see RhusSwiss cheese plant - See Monstera deliciosaSymphoricarpos (snowberry) - poisonousSymphytum (comfrey, Russian comfrey) - poisonousSyngonium (arrowhead vine, goosefoot vine) - poisonous; skin & eye irritantTobacco - see NicotianaTabernaemontana (crepe jasmine) - poisonousTaro – see Alocasia, ColocasiaTaxus (yew) - poisonousThevetia (yellow oleander) - poisonous; skin irritantThornapple - see DaturaTulip - see TulipaTulipa (tulip) - skin irritantUmbrella tree - see ScheffleraVeratrum (false hellebore)  - poisonousVitex (chaste tree) - skin irritantWater arum - see Calla palustrisWater-dropwort - see OenantheWinter cherry - see Solanum pseudocapsicumWisteria - somewhat poisonousWoody nightshade - see SolanumXanthosoma - poisonous; skin & eye irritantYesterday, today and tomorrow - see BrunfelsiaYew - See TaxusZantedeschia (calla lily) - poisonous; skin & eye irritant, Join For some people, Holm Rasmussen's discovery is already too late. Cats and Plants. Bracken (Pteridium) is a genus of large, coarse ferns in the family Dennstaedtiaceae.Ferns (Pteridophyta) are vascular plants that have alternating generations, large plants that produce spores and small plants that produce sex cells (eggs and sperm). times, RHS Registered Charity no. If you haven't done so already, call a toxin information center, or failing that, grab your kid and head for an ER. All amounts stated are inclusive of Insurance Premium Tax. However, in May 1994, outbreaks of food poisoning were associated with eating raw or lightly cooked fiddlehead ferns in New York and western Canada. Arisaema (cobra-lily) - poisonous; skin & eye irritant Arrowhead vine - see Syngonium Arum (cuckoo-pint, lords-and-ladies) - poisonous; skin & eye irritant Asparagus (asparagus fern) - may cause skin allergy, fruits poisonous Asparagus fern See Asparagus Atropa (deadly nightshade) - poisonous; skin irritant Autumn crocus See Colchicum By measuring PTQ levels in soil and soil-water at different times of year, he has shown that the highest levels are found after heavy summer rainfall. If … Its curling green fronds decorate many British hillsides, dying down and turning a distinctive rusty-red colour through the winter. Many plants that are poisonous to dogs are very common in backyards.These toxic time-bombs range from being only mildly toxic (for example, causing vomiting) to being responsible for serious canine health problems.If you wish to err on the safe side, thoroughly research all the vegetation and berries that your dog has access to. If you are at all concerned, seek medical attention at an Accident and Emergency Department, taking a sample of the plant or fungus/mushroom with you.General enquiries: General enquiries about fungus/mushroom toxicity can be sent to fungus-poisons@kew.org. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place. Better be safe than sorry. Ontario Ferns states that even "edible" ferns contain small levels of carcinogens and should only be consumed in … The emerald fern is toxic to dogs and can cause a myriad of symptoms. Amaryllis bulbs. Contact with the plant followed by exposure to sunlight results in very severe, localised sunburn with blistering and long-lasting skin discoloration, If you think a child or adult has eaten part of a doubtful plant, seek medical advice immediately from a hospital Accident & Emergency department, Do not panic and DO NOT try to make the person sick, Seek veterinary advice if you think an animal has eaten a poisonous plant, Take along samples of the plant concerned. Always use caution and common sense in your plant choices. The simplest, most budget-friendly herbicide is hot water. (Click Here for a list of Edible Species) On this website, a plant is considered to be poisonous if eating or touching … "The situation is worst in sandy soils with a pH between five and six. All these plants are safe to grow provided they are treated with respect. RSPCA (dogs, cats and horses)Dogs TrustInternational Cat Care (cats)British Horse Society, For information about particular risks presented by potentially harmful plants contact RHS Gardening Advice; Tel: (01483) 479700, 10am to 1pm. Some manifestations of toxicity are subtle. These ferns would be well suited to cooler parts of the house but won’t survive in rooms that are too well heated. Once the soil gets too acid (peat for example), or alkaline (limestone or chalk for example), then it becomes less mobile and degrades before reaching the groundwater," explains Holm Rasmussen. The dose, as always, determines if a plant is safe source of nutrients or a toxic hazard. "Bracken certainly could be an environmental factor that explains the raised levels of cancer in certain areas," says Holm Rasmussen. To his horror, some of the water had PTQ levels that were over 20,000 times higher than the suggested tolerable levels for environmental carcinogens. The website is intended for customers based in the UK and is therefore subject to the UK regulatory regime. New research, being presented at the British Ecological Society Annual Meeting in Lancaster this week, has revealed that a common fern may be poisoning water supplies all over the world. Holm Rasmussen believes that the water supply to some of the farms and villages in Gwynedd may have been loaded with PTQs from bracken. If you have any plants to add or if your chickens regularly eat any of these ‘poisonous’ plants, or even if you are worried about a certain plant, not on this list, please leave a comment below and … 222879/SC038262, Some plants may cause digestive upset or discomfort if eaten, A small of number common garden plants are more toxic and could cause severe poisoning (see plant list below), Irritant sap may cause a burning sensation and sometimes blistering of the skin; anyone can be affected if exposure is sufficient, Some plants contain chemicals called allergens. Although some common ferns may be poisonous or carcinogenic, this species has been considered to be nontoxic. If a dog or cat ingests the berries of this plant, vomiting, diarrhea and/or abdominal pain can occur. You should need 1–2 gallons (3.8–7.6 L) of water to kill the fern, depending on its size. More plants, poisonous for dogs and cats will be added to the list within the near future. Furthermore, many of the new GM crops, such as GM maize, are developed with an increased natural defence against pests and weeds, by inserting genes that code for the high production of toxic compounds. It is not possible to generalize because some ferns are poisonous and others are not. Ferns - Poisonous Species: This is a list of poisonous species found on this site, in order by the Common Name that is used for each species on this site. According to Vet Street, the most common threat comes from asparagus ferns, which contain sapogenin. Holm Rasmussen believes that "hot spots" of gastric and oesophageal cancer, from Wales to South America, could be explained by the leaching of PTQs from bracken into the water supply. Safe Aviary Plants. One essential part of a sheep’s day is that of grazing. This report summarizes the investigations of these outbreaks. Preferring cool, damp locations, this fern needs indirect light, evenly moist soil and sufficient humidity. Also known as: brake fern, eagle fern ID:A perennial fern with triangular leaves that can reach two to three feet high.Grows in clumps in woodlands and moist open areas. Farmers and landowners are trying to reduce the amount of bracken, but it is difficult to get rid of and the most effective mechanism is to spray hillsides with a noxious pesticide: not ideal for improving the water supply. "Some of these toxic natural products have a similar structure to PTQ and I think they will behave in a similar way," says Holm Rasmussen. 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