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Harmful Plants
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The following list of harmful plants comes from an article published in KOI USA several years ago

Plant- Poisonous Part

 
Amaryllis- Bulbs
 

Jerusalem Cherry- Berries

 
Azalea- Leaves
 
Jimsonweed- Leaves, seeds
 
Balsam Pear- Seeds, outer rind of fruit
 
Juniper ( J. virginiana)- Needles, stems, berries
 
Baneberry- Berries, roots
 
Lantana- Immature berries
 
Bird of Paradise- Seeds
 

Larkspur- All parts

 
Black Locust- Bark, sprouts, foliage
 
Laurel- All parts
 
Blue/Green Algae- Some forms toxic
 
Lily of the Valley- All parts, including water
 
Boxwood- Leaves, stems
 
Lobelia- All parts
 
Buckthorn- Fruit, bark
 
Locoweed- All parts
 
Buttercup- Sap, bulbs
 

Lords and Ladies- All parts

 
Caladium- Leaves
 
Marijuana- Leaves
 
Calla Lily- Leaves
 
Mayapple- All parts, except fruit
 
Castor Bean (Castor Oil)- Beans, Leaves
 
Mescal Bean- Seeds
 
Challice Vine- All parts
 
Mistletoe- Berries
 
Cherry Tree- Bark, twigs, leaves, pits
 

Mock Orange- Fruit

 
Christmas Candle- Sap
 
Monkshood- Leaves, roots
 
Coral Plant- Seeds
 
Morning Glory- All parts
 
Daffodil- Bulbs
 
Narcissus- Bulbs
 
Daphne- Berries
 
Nightshades (All)- Berries, leaves
 
Datura- Berries
 

Oak- Acorns, foliage

 
Deadly Amanita- All parts
 
Oleander- Leaves, branches, nectar of blossoms
 
Death Camas- All parts
 
Philodendron- Leaves, stem
 
Deiffenbachia- Leaves
 
Pikeweed- Leaves, roots,
 
Delphinium- All parts
 
immature berries
 
Eggplant- All parts but fruit
 

Poinsettia- Leaves, flowers

 
Elephant's Ear (Taro)- Leaves, stem
 
Poison Ivy- Sap
 
English Ivy- Berries, leaves
 
Poison Oak- Sap
 
False Henbane- All parts
 
Potato- Eyes and new shoots
 
Foxglove- Leaves, seeds
 
Privet- All parts, including berries
 
Golden Chain- All parts, especially seed
 

Rhododendron- All parts

 
Hemlock, Poison- All parts, especially roots and seeds
 
Rhubarb- Leaves
 
Hemlock, Water- All parts, especially roots and seeds
 
Rosary Peas- Seeds
 
Henbane- Seeds
 
Skunk Cabbage- All parts
 
Holly- Berries
 

Snow on Mountain- All parts

 
Horse Chestnut- Nuts, twigs
 
Snowdrop- All parts, especially buds
 
Hyacinth- Bulbs
 
Sweet Pea- Seeds and fruit
 
Hydrangea- Flower bud
 
Tobacco- Leaves
 
Indian Turnip (jack-in-the-pulpit)- All parts
 
Virginia Creeper- Sap
 
Iris (Blue Flag)- Bulbs
 
Wisteria- All parts
 
Java Bean (Lima)- Uncooked bean
 
Yam Bean- Roots, immature pods
 
 
 
Yew (American, English, Japanese)- Needles, seeds

© 2005 Nishiki Koi Club