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Plants Poisonous to Koi

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  • Plants Poisonous to Koi

    Can anyone refer me to a list (if it exists) of plants poisonous to koi which should not be planted anywhere near a pond?

    I am planning my greenhouse pond and want to avoid preventable mistakes.....
  • #2

    Toxic Plants

    One pollutant area that is often overlooked by pond keepers has to do with the plants in the pond or those that are part of the landscaping around (and over) the pond. The seeds of most plants can swell and plug up the digestive tract of the Koi. A partial list of the plants or parts of plants that have been reported as having some toxicity to Koi (and pets and people) for various reasons include:

    Amaryllis - bulbs

    Baneberry - berries, roots

    Bird of Paradise - seeds

    Black Locust Bark - sprouts, foliage

    Boxwood - leaves, stems

    Buttercup - sap, leaves

    Calla Lily - leaves

    Cherry - bark, twigs, leaves, pits

    Coral Plant - seeds

    Daffodil - bulbs

    Datura - berries

    Death Camas - all parts

    Eggplant - all but fruit

    Elephants Ear - leaves, stem

    English Ivy - berries

    Foxglove - leaves, seeds

    Hemlock - all parts

    Holly - berries

    Hyacinth - bulbs

    Indian Turnip - all parts

    Iris - bulbs

    Jasamine - berries

    Java Bean - uncooked bean

    Lantana - immature berries

    Laurel - all parts

    Locoweed - all parts

    Marijuana - all parts

    Mayapple - all parts

    Mistletoe - berries

    Mock Orange - fruit

    Morning Glory - all parts

    Narcissus - bulbs

    Oak - acorns, foliage

    Pine - sap

    Poinsettia - leaves, flowers

    Potato - eyes, new roots

    Privet - berries, leaves

    Prunus varieties - seeds, some

    Redwood - sap (from decks also)

    Rhubarb - leaves

    Ranunculus - all parts parts

    Snapdragon - all parts

    Snowdrop - all parts

    Tiger Lily - all parts

    Tomato - leaves

    Tulip - bulbs

    “If you tell a big enough lie and tell it frequently enough, it will be believed” Adolf Hitler



    • #3

      ACOKANTHERA fruit & flowers
      ACONITUM (Aconite, Monkshood) roots, flowers, & leaves
      ANENOME (Wildflower) all parts
      AMARYLLIS (A. Belladonna) bulbs contain alkaloids
      ANGEL TRUMPET TREE (Datura Arborea) flowers & leaves
      APPLE (See Cherry Laurel)APRICOT (See Cherry Laurel)
      ATROPA BELLADONNA all parts, especially black berries
      AUTUMN CROCUS (C. Sativus, Saffron Crocus) bulbs
      AZALEAS (Rhododendorn) all parts can be fatal
      BANEBERRY (Actaea, Doll's Eyes) red or white berries, roots & foliage
      BEACH PEA (Lathyrus Maritimus) stems
      BETEL NUT PALM all parts
      BIRD OF PARADISE BUSH (Caesalpinia) seeds
      BITTERSWEET (Celastrus) berries
      BLACK LOCUST (Robinia Pseudoacacia) bark, sprouts, & foliage are poisonous
      BLEEDING HEART (Dicentra, Dutchman's Breeches) foliage & roots
      BLUEBONNETS (Lupinus) all parts
      BOTTLEBRUSH (Callistemon, possibly Melaleuca) flowers
      BOXWOOD (Buxus Sempervirens) all parts
      BUCKEYE (Aesculus, Horse Chestnut) sprouts and nuts
      BUTTERCUP (Ranuculus, Crowfoot) all parts
      CALADIUM all parts
      CALLA LILY (Zantedeschia) leaves
      CAROLINA JESSAMINE (Gelsemium) All parts
      CASTOR BEAN (Ricinus Communis) seeds can be fatal
      CHERRY see Cherry Laurel
      CHERRY LAUREL (Prunus Varieties) all parts, seeds contain hydrocyanic acid
      CHINABERRY (Melia Azedarach) berries are poisonous
      CHRISTMAS BERRY (Heteromeles Arbutifolia, Toyon) berries are poisonous
      COLUMBINE (Aquilegia) all parts
      COMMON PRIVET (Ligustrum) black or blue wax coated berries and leaves
      CORAL BERRY (Symphoricarpos) seeds
      CROCUS all bulbs
      DAPHNE berries can be fatal
      DAFFODIL (Narcissus) bulbs may be fatal
      DATURA (Brugmansia) flowers, berries, & seeds
      DEATH-CAMAS (Sygadenus Venous) all parts poisonous, roots are deadly
      DEADLY NIGHTSHADE (Solanum Nigrum) all parts, unripe fruit & foliage
      DELPHINIUM (Larkspur annual) all parts
      DESTROYING ANGEL (Amanita Phalloides, Death Cup) all parts
      DIEFFENBACHIA (Dumb Cane) all parts, especially the sap
      DOGWOOD (Cornus) fruit slightly poisonous
      EGGPLANT all but fruit
      ELDERBERRY (Sambucus) red fruit poisonous, black & blue fruit o.k.
      ELEPHANT EAR (Colocasia, Taro, Caladium) stem & leaves
      ENGLISH IVY (Hedera Helix) berries
      EUPHORBIA (Splurge, Gopher Plant, Mole Plant) roots, sap
      FALSE HELLEBORE (Veratrun Viride & other species) all parts poisonous, root deadly
      FOXGLOVE (Digitalis Purpurea) all parts can be fatal
      FLY AGARIC (Fly Amanita Mushroom) whole plant
      FOUR O'CLOCK whole plant
      GELSEMIUM (Carolina Jessamine) whole plant
      GOLDEN CHAIN seeds & pods may be fatal
      HELLEBORE (Ranunculaccea) all parts
      HEMLOCK (Tsuga) all parts, especially roots
      HENBANE all parts
      HOLLY (Ilex Aquifolium, Opaca, Vomitoria) leaves & berries
      HORSE CHESTNUT (Aesculus, Buckeye) all parts
      HORSETAIL (Equisetum Hyemale) all partt
      HYACINTH bulbs can be fatat
      HYDRANGEA whole plant
      IMPATIENS (Balsam, Touch-Me-Not, Snapweed) whole plant
      IRIS underground stemt
      IVY (Hedera) all parts
      JACK-IN-THE-PULPIT (Arisaema Triphylla) root is irritant & astringent
      JASMINE, YELLOW all parts
      JERUSALEM CHERRY (Solanum Pseudocapsicum) fruit & leaves
      JESSAMINE (Gelsemium Sempervirens) berries are fatal
      JIMSON WEED (Datura Stramomium, Thorn Apple) all part
      LAMBKILL (Kalmia Angustifolia, Sheep Laurel) leaves
      LANTANA CAMARA (Red Sage) green berries are fatal
      LARKSPUR (Delphinium) foliage & roots are dangerous, seeds may be fatal
      LAUREL (Primus varieties) all parts can be fatal
      LILY (Lilium) some varieties bulbs
      LILY-OF-THE-VALLEY (Convallaria Majalis) all parts
      LOBELIA (Cardinal Flower) all parts
      LOCOWEED (Astragalus, Oxytropis) all parts
      LUPINE (Lupinus) seeds
      MACHINEEL all parts
      MARIJUANA all parts
      MAY APPLE (Podophullum) all parts
      MESCAL (Peyote) all parts
      MILKWEED (Asciepias) all parts, especially sap
      MISTLETOE berries can be fatal
      MOCCASIN FLOWER (Lady Slipper, Cypripedium Spectabiles) all parts
      MOCK ORANGE (Philadelphus) all parts
      MONKSHOOD (Aconitum) foliage & fleshy roots
      MORNING GLORIES (Ipomea) all parts
      MOUNTAIN LAUREL (Kalmia Latifolia) young leaves & shoots, can be fatal
      MUSHROOMS wild types
      NARCISSUS (Daffodil) bulbs can be fatal
      NATAL CHERRY (Solanum) berries
      NICOTIANA (Flowering Tobacco) leaves
      NIGHTSHADE (European Bittersweet, Horse Nettle) all, especially unripe berries
      OAK foliage & acorns
      OLEANDER (Nerium Oleander) All parts poisonous including smoke if burned
      PEACH see Cherry Laurel, seeds
      PEAR see Cherry Laurel, seeds
      PEONY (Paeonia) all parts
      PERIWINKLE (Vinca, Myrtle) whole plant
      PHILODENDREN leaves & sapPINE sap
      PINKS (Sweet William, Carnation, Dianthus) all parts
      PLUM see Cherry Laurel, seeds
      POKEWEED (Phytolacca, Pokeberry) roots are dangerous
      POINSETTIA (Euphorbia Pulcherrima) leaves & sap can be fatal
      POISON IVY (Rhus Radicans) all parts
      POISON OAK (Rhus Diversioba, Rhus Toxicondendron) all parts
      SUMAC (Rhus) all parts
      POPPY (Papaver) all except California Poppy can be dangerous
      POTATO sprouts and foliage can be fatal particularly ornamental varieties
      PRIVET (Ligustrum) leaves & fruit
      PRUNUS (many varieties) seeds, some parts
      RANUNCULUS all parts
      REDWOOD sap
      RHODODENDRON (Azalea) all parts can be fatal
      RHUBARB (Rhenum Rhaponticum) leaves, stems OK for human consumption
      ROSEMARY (Rosemarius Officinalis) leaves of certain varieties are poisonous
      SAGE (Salvia) leaves of certain varieties are poisonous
      SCOTCHBROOM (Cytinsus Scoparious) seeds, invasive
      SENECIO whole plant of some species
      SOLANUM (Nightshade) all, especially some berries
      SNAPDRAGON (Antirrhinum) all parts
      SNOWDROP (Galanthus) all parts
      SQUIRREL CORN (Dicentra Canadensis, Bleeding Heart) all parts
      STRAMONIUM (Jimson Weed, Datura) all parts
      SWEET PEA (Lathyrus) stems
      TANSY (Tanacetum) all parts
      TARO (Colocasia, Elephant's Ear) stem & leaves
      TIGER LILY (Lilium Tigrinum) all parts
      TOADSTOOLS can be fatal
      TOBACCO all parts
      TOMATO foliage & vines
      TULIP (Tulipa) bulbs of some varieties
      “If you tell a big enough lie and tell it frequently enough, it will be believed” Adolf Hitler



      • #4

        Thanks Wood!


        • #5

          Darn! Is there anything left?


          • #6

            Citrus trees and the orchid collection, and a bunch of bromiliads, I guess!


            • #7

              Bumping up for Lapv.


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