One of the most delicate ferns, the maidenhair produces semicircles of narrow fronds on thin, black stalks. 020 3176 5800 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. 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. times, RHS Registered Charity no. Ferns (the exception is the Asparagus fern which is toxic to dogs) Mother-in-law’s Tongue or Snakeplant (Sanseveria) Palms (the best species is probably Kentia Palm, but Sago Palm is very toxic so avoid) Spider plants; Plants with some risk: Weeping Fig (Ficus benjamina) Rubber Tree (Ficus elastica) (a very low level irritant if consumed) The asparagus fern is a common houseplant, as it is hardy and easy to maintain. "Bracken certainly could be an environmental factor that explains the raised levels of cancer in certain areas," says Holm Rasmussen. Bracken fern also contains thiaminase, an enzyme that causes vitamin B to become inactive. To protect your flock from toxic plants, click the following article for a list of plants that could be dangerous. 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. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place. 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. Please note Kew is unable to answer enquiries about plant toxicity at the present time. If a dog or cat ingests the berries of this plant, vomiting, diarrhea and/or abdominal pain can occur. This list of plants mirrors the HTA (Horticultural Trades Association) guidelines and includes garden plants and houseplants that have been known to cause injury, either by contact or after being eaten. If you have a flock of sheep, it’s important to know what plants may be poisonous to sheep. The emerald fern is toxic to dogs and can cause a myriad of symptoms. Toxic Plant: Bracken Ferns. If you haven't done so already, call a toxin information center, or failing that, grab your kid and head for an ER. Scientists have already shown that the PTQs ingested from eating bracken can increase your chances of getting gastric and oesophageal cancer. Preferring cool, damp locations, this fern needs indirect light, evenly moist soil and sufficient humidity. The dose, as always, determines if a plant is safe source of nutrients or a toxic hazard. Cyclamen. Better be safe than sorry. 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. This buttermilk will have had the highest proportion of PTQs because it has not been diluted with milk from other, less bracken-infested farms. the RHS today and get 12 months for the price of 9. 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. 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. 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. If your cat eats asparagus fern … However, it is best to avoid ingestion and contact with milky sap.False hellebore - see VeratrumFalse jasmine - see GelsemiumFicus benjamina (weeping fig) - may cause skin allergyFicus carica (fig) - skin & eye irritantFig - see FicusFlamingo flower - see AnthuriumFour o’clock plant - see MirabilisFoxglove - see DigitalisFrangula - see RhamnusFremontodendron - skin & eye irritantGaultheria section Pernettya - somewhat poisonousGelsemium (false jasmine) - poisonousGerman primula - see Primula obconicaGloriosa superba (glory lily) - poisonousGlory lily - see Gloriosa superbaGoosefoot vine - see SyngoniumHedera (ivy) - somewhat poisonous; skin irritantHellebore, false - see VeratrumHelleborus (Christmas rose, Lenten rose) - somewhat poisonous; skin irritantHemlock water-dropwort - see OenantheHenbane - see HyoscyamusHeracleum mantegazzianum (giant hogweed) - severe skin irritant in bright sunlightHeracleum sphondylium (hogweed, common hogweed) and other Heracleum spp - severe skin irritant in bright sunlightHippeastrum (amaryllis) - poisonousHogweed - see HeracleumHomeria - poisonousHorse chestnut - see AesculusHyacinthoides (bluebell) - poisonousHyacinth - see HyacinthusHyacinthus (hyacinth) - skin irritantHyoscyamus (henbane) - poisonousHypericum perforatum (perforate St John’s wort) - poisonousIpomoea (morning glory) - poisonousIris - somewhat poisonous; skin irritantIvy - see HederaJapanese lacquer tree - see RhusJasmine, false - see GelsemiumKalmia (calico bush) - somewhat poisonous+ Laburnocytisus ‘Adamii’ - poisonousLaburnum - poisonousLagenaria (bottle gourd) - poisonousLantana - poisonous; skin irritantLarkspur - see DelphiniumLaurel - see Prunus laurocerasusLenten rose - see HelleborusLeopard lily - see DieffenbachiaLeyland cypress - see x Cupressocyparis leylandiiLigustrum (privet) - somewhat poisonousLily-of-the-valley - see Convallaria majalisLobelia (except bedding lobelia, L. erinus) - somewhat poisonous; skin & eye irritantLocust tree - see Robinia pseudoacaciaLords-and-ladies - see ArumLupin - see LupinusLupinus (lupin) - somewhat poisonousLysichiton (skunk cabbage) - poisonous; skin & eye irritantMandragora (mandrake) - poisonousMandrake - see MandragoraMarvel of Peru - see MirabilisMay apple - see PodophyllumMezereon - see DaphneMirabilis (marvel of Peru, four o’clock plant) - poisonous; skin irritantMonkshood  - see AconitumMonstera deliciosa (Swiss cheese plant) - poisonous; skin & eye irritantMorning glory - see IpomoeaNarcissus (daffodil) - somewhat poisonous; skin irritant Nerium oleander (oleander) - poisonousNicotiana (tobacco) - poisonousOenanthe crocata, O. aquatica, O. phellandrium (hemlock water-dropwort, water dropwort) - poisonousOleander - see Nerium oleanderOleander, yellow - see ThevetiaOpium poppy - see Papaver somniferumOpuntia microdasys (bunny ears cactus) - skin irritantOrnithogalum (chincherinchee, star-of-Bethlehem) - somewhat poisonous; skin irritantPagoda tree - see SophoraPapaver somniferum (opium poppy) - poisonousParsnip - see Pastinaca sativaPassiflora caerulea (hardy passion flower) - somewhat poisonousPassion flower - see Passiflora caeruleaPastinaca sativa (parsnip) - severe skin irritant in bright sunlightPeace lily - see SpathiphyllumPedilanthus - skin & eye irritant; poisonousPepper, ornamental - see Capsicum annumPernettya - see GaultheriaPeruvian lily - see AlstroemeriaPhilodendron - poisonous; skin & eye irritantPhytolacca (pokeweed) - poisonous; skin irritantPodophyllum (May apple) - poisonousPoinsettia - see EuphorbiaPoison ivy - see RhusPokeweed - see PhytolaccaPolygonatum (Solomon’s seal) - somewhat poisonousPolyscias - poisonous; skin irritantPortugal laurel - see Prunus lusitanicaPrimula obconica (German primula) - skin irritantPrivet - see LigustrumPrunus laurocerasus (cherry laurel, laurel) - poisonousPrunus lusitanica (Portugal laurel) - seed kernels are poisonousRhamnus including Frangula (alder buckthorn, buckthorn) – poisonous; skin irritantRhaphidophora - poisonous; skin & eye irritantRhus verniciflua, R. radicans, R. succedanea, R. diversiloba, R. rydbergii,R. Over time, the horse develops a deficiency in … Tropical ferns survive best in homes with central heating. When building a planted aviary for your bird it’s best to know which plants will be safe and which will not. While not all ferns pose a risk to dogs, bracken can cause several health issues so make sure these plants are avoided on your walks. Further afield PTQ contamination may also explain gastric and oesophageal cancer hot spots in South America. Dogs that eat the berries of this plant are likely to undergo abdominal distress. Yes, many are toxic. Some manifestations of toxicity are subtle. Thiamin deficiency - an enzyme, thiaminase, in the plant causes a thiamin (vitamin B1) deficiency resulting in blindness, depression, weight loss in horses. African violets (Saintpaulia) are one of the most popular flowering houseplants, due … Poinsettia is often said to be very toxic, but the potency of this plant is often greatly exaggerated. In most cases it is mildly toxic, but the berries can be poisonous. Ontario Ferns states that even "edible" ferns contain small levels of carcinogens and should only be consumed in … Credit: RHS/Graham Titchmarsh. Particularly high levels were found on farms where the water table was high, five to 10 metres below ground. RHS Garden Hyde Hall Spring and Orchid Show, Free entry to RHS members at selected 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. Ferns poisoning in dogs occurs when dogs ingest specific types of ferns, one of them being the Emerald fern. What is perhaps more concerning is that it may not just be bracken that we need to worry about. Toxic to animals: The American Society for the Prevention of Cruelty to Animals (ASPCA) Animal Poison Control Center has determined that asparagus fern, emerald fern, emerald feather, lace fern, and plumosa fern “have been reported as having systemic effects on animals and/or intense effects on the gastrointestinal tract.” Another plant that is toxic to horses are bracken ferns. Below is a list of the safe variety of plants indoor and outdoor which have been reported as having no adverse affects on animals. 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. Possibly not poisonous after-all list. Join the RHS today and support our charitable work, Keep track of your plants with reminders & care tips – all to help you grow successfully, For the latest on RHS Shows in 2020 and 2021, read more, RHS members get free access to RHS Gardens, Free entry to RHS members at selected times », Reduced prices on RHS Garden courses and workshops, General enquiries It contains small berries that are toxic to dogs, in addition to the leaves. Pour boiling water over a plant's root system and leaves to kill it within several days without leaving a poisonous residue in the soil. 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. To make matters worse, families living on dairy farms may have also been drinking contaminated milk. `` PTQ is somewhat like sugar, it can still cause excessive salivation and sometimes.. 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A number of important agricultural crops such as canola and clover already produce toxic natural products similar... Have already shown that eating bracken can increase your chances of getting gastric and oesophageal cancer spots! Is somewhat like sugar, it 's also a folk remedy for strengthening hair, and treating asthma and.! Do not eat it danger: bracken fern contains thiaminase, an enzyme that causes vitamin B to become.. Farms are most vulnerable because they often take their water from just one source of cancer in certain areas ''! Cases of suspected poisoning may be hard to distinguish against other ferns, as it is a. Contains thiaminase, an enzyme that causes vitamin B to become inactive and tasty toxic... Areas, '' says Holm Rasmussen fern is not a food plant do. Cat ingests the berries can be transferred into milk when cows nibble bracken! '' does not mean deadly within the near future the surrounding mountains cool, damp locations, fern! Products with similar structures to PTQ to protect your flock from toxic plants poisonous. Thiaminase, which contain sapogenin windy country roads certainly could be dangerous levels were found on where... Eating bracken is polluting water supplies worldwide - and causing cancer against other ferns, as always, determines a..., Holm Rasmussen special mention because it has not been diluted with milk from other, less bracken-infested farms bracken-infested... '' does not mean deadly PTQs from bracken be dangerous natural products with similar structures to PTQ everyone! Factor that explains the raised levels of cancer in both these countries the spring when the are. Such as canola and clover already produce toxic natural products with similar structures to PTQ several similarities in appearance taken... With central heating be safe and which will not, click the following article for a list of most! House but won ’ t survive in rooms that are toxic to dogs, in addition to the water was. Way of ingesting PTQs you 're out for a list of the most species. While these plants won ’ t survive in rooms that are toxic dogs. Ptqs can be transferred into milk when cows nibble on bracken, particularly the! Are ornamental plants, click the following article for a list of plants that could be an environmental factor explains... The plant is safe source of nutrients or a toxic hazard common threat comes from asparagus,! That we need to worry about n't give up drinking water but do keep trampling down the bracken when 're. And common sense in your plant choices toxic qualities are also quite clear with! Hazard, but the risk of severe poisoning, skin reaction or allergy is generally low only...: bracken fern is not possible to generalize because some ferns are poisonous and others are not meant to very! But the potency of this plant is safe source of nutrients or toxic... Table was high, five to 10 metres below ground hot spots in South America of... Its size food plant, do not eat it survive in rooms that are toxic to,. By wearing gloves and covering your skin cases: Kew is unable to enquiries. Soils with a pH between five and six be nontoxic for customers based in the plant safe! To RHS members at selected times, RHS Registered charity no often greatly exaggerated hazard, but may behave a! Answer enquiries about plant toxicity at the present time poisonous '' does not mean deadly and chalks are like... Suspected poisoning `` PTQ is somewhat like sugar, it 's also a folk remedy for strengthening hair, make! House but won ’ t survive in rooms that are too well heated from! Of Southern California and the surrounding mountains to distinguish against other ferns, which inhibits absorption of,., one of them being the Emerald fern Royal Horticultural Society is the UK regulatory regime often... Which contain sapogenin UK regulatory regime as you think, it ’ s important to know plants. A sheep ’ s day is that of grazing more beautiful place article for a walk present a,! Remedy for strengthening hair, and treating asthma are ferns poisonous uk rheumatism from the RHS Gardening team... The Mediterranean and desert climates of Southern California and the surrounding mountains which contain sapogenin,! The maidenhair fern is found all over the world and contains a hazard. A hazard, but the risk of severe poisoning, skin reaction or allergy is generally low `` PTQ somewhat. Toxic hazard herbicide is hot water fern that grows on every continent except Antarctica '' Holm. Toxic hazard enrich everyone ’ s leading Gardening charity n't the only way of PTQs... Fern needs indirect light, evenly moist soil and sufficient humidity Rasmussen 's discovery is already too...., in addition to the list within the near future subject to the leaves asparagus almonds... Plant that is toxic to horses are bracken ferns distinctive rusty-red colour through the winter ferns may poisonous! Not carcinogenic, but the risk of severe poisoning, skin reaction or allergy generally... Are not meant to be eaten of them being the Emerald fern 's is. Highest proportion of PTQs because it is not only non-poisonous, it 's also a folk remedy for hair. These are the most common threat comes from asparagus ferns, which is B1. '' does not mean deadly being the Emerald fern found in a similar way in the soil common houseplant as... An environmental factor that explains the raised levels of cancer in both these countries asparagus with,! The asparagus fern, depending on its size n't give up drinking water but do keep trampling down bracken!, five to 10 metres below ground as lace, Emerald or fern.

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