Index of Toxic Plants, Harmful Parts, and Symptoms

FLOWER GARDEN PLANTS

 

PLANTS  

TOXIC PART  

SYMPTOMS

Larkspur

 

Young plant, seeds

 

Digestive upset, nervous excitement, depression. May be fatal.

 

Monkshood

 

Fleshy roots

 

Digestive upset and nervous excitement.

 

Autumn Crocus, Star of Bethlehem

 

Bulbs

 

Vomiting and nervous excitement.

 

Lily-of-the-Valley

 

Leaves, flowers

 

Irregular heart beat and pulse, usually accompanied by digestive upset and mental confusion. ;

 

Iris

 

Underground stems

 

Severe-but not usually serious-digestive upset.

 

Foxglove ;

 

Leaves

 

Large amounts cause dangerously irregular heartbeat and pulse, usually digestive upset and mental confusion. May be fatal.

 

Bleeding Heart

 

Foliage, roots

 

May be poisonous in large amounts. Has proved fatal to cattle.

 

VEGETABLE GARDEN

Rhubarb

 

Leaf blade

 

Fatal. Large amounts of raw or cooked leaves can cause convulsions, coma, followed rapidly by death.

 

ORNAMENTAL PLANTS

 

Daphne

 

Berries

 

Fatal. A few berries can kill a child.

 

Wisteria

 

Seeds, pods

 

Mild to severe digestive upset. Many children are poisoned by this plant.

 

Golden Chain

 

Bean-like capsules in which the seeds are suspended

 

Severe poisoning. Excitement, staggering, convulsions and coma. May be fatal.

 

Laurels, Rhododendrons, Azaleas

 

All parts

 

Fatal. Produces nausea and vomiting, depression, , difficult breathing, prostration and coma.

 

Jasmine

 

Berries

 

Fatal. Digestive disturbance and nervous symptoms.

 

Lantana Camara. (Red Sage)

 

Green berries

 

Fatal. Affects lungs, kidneys, heart and nervous system. Grows in the southern U.S. And in moderate climates,

 

Yew

 

Berries, foliage

 

Fatal. Foliage more toxic than berries. Death is i usually sudden without warning symptoms.

 

TREES AND SHRUBS

 

Wild and cultivated cherries

 

Twigs, foliage

 

Fatal. Contains a compound that releases cyanide when eaten. Gasping, excitement and prostration are common symptoms.

 

Oaks

 

Foliage, acorns

 

Affects kidneys gradually. Symptoms appear only after several days or weeks. Takes a large amount for poisoning-

 

Elderberry

 

All parts, especially roots

 

Children have been poisoned by using pieces of the pithy stems for blowguns. Nausea and digestive upset.

 

 

Black Locust

 

Bark, sprouts, foliage

 

Children have suffered nausea, weakness and depression after chewing the bark and seeds.

 

 

PLANTS IN WOODED AREAS

 

 

Jack-in-the-Pulpit

 

All parts, especially roots

 

Like Dumb Cane, contains small needle-like crystals of calcium oxalate that cause intense irritation and burning of the mouth and tongue.

 

 

Moonseed

 

Berries

 

Blue, purple color, resembling wild grapes. May be fatal.

 

 

Mayapple

 

Apple, foliage, roots

 

Contains at least 16 active toxic principles, primarily in the roots. Children often eat the apple with no ill effects, but several apples may cause diarrhea.

 

 

Mistletoe

 

Berries

 

Fatal. Both children and adults have died from eating the berries.

 

 

PLANTS IN SWAMP OR MOIST AREAS

 

 

Water Hemlock

 

All parts

 

Fatal. Violent and painful convulsions. A number or people have died from hemlock.

 

 

PLANTS IN FIELDS

 

 

Buttercups

 

All parts

 

Irritant juices may severely injure the digestive system.

 

 

Nightshade

 

All parts, especially the un-ripened berry

 

Fatal, Intense digestive disturbance and nervous symptoms.

 

 

Poison Hemlock

 

All parts

 

Fatal. Resembles a large wild carrot.

 

 

Jimson Weed (Thorn Apple)

 

All parts

 

Abnormal thirst, distorted sight, delirium, incoherence and coma. Common cause of poisoning. Has proved fatal.

 

 

 

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