Common Poisonous House and Garden Plants and their Symptoms
If you have children or pets or suspect someone might have ingested or handled these plants improperly, this list is for you. Most of these plants seem entirely harmless and even more of them are used every day in gardens and as indoor decoration or in spellwork. Most all the symptoms I list are symptoms of ingestion unless otherwise noted. If something is incorrect, please feel free to message me and I will fix it shortly!
Peace Lily (Spathiphylum)
Peace lilies resemble Calla lilies and are fairly popular as gifts. They contain calcium oxalate crystals that can bring on skin irritation when handled, burning of the mouth, difficulty swallowing and nausea.
English Ivy (Hedera Helix)
The berries from English Ivy can cause gastrointestinal issues and delirium or respiratory problems. Sap from the leaves can cause skin irritation and sometimes blisters.
All parts of this plant contain calcium oxalate. Repeated contact can cause reactions similar to allergic reactions and ingestion can cause abdominal pain.
Ficus trees and Rubber Trees (Ficus Benjamina/Elastica)
Ficus trees produce a form of latex that can bring on allergic reactions in some people.
Larkspur and Delphinium (consolida ajacis)
Similar to our deadly friend Aconite (monkshood), this plant can bring about the same symptoms if ingested in a large enough quantity.
Lily of the Valley (Convalina mahalis)
Contains cardiac glycosides that can cause headache, nausea, and cardiac issues.
Bleeding Heart (Dicentra)
Contains toxic alkaloids that can cause nausea, seizures, and respiratory issues.
Sweet Pea (Lathyrus odoratus)
All parts of sweet peas are mildly poisonous. New sprouts and shoots contain the most toxins, an amino acid called lathyrogen. Can cause paralysis, weakness and tremors.
Produces a highly irritating sap. Touching the bulbs can cause a reaction as well as breathing dust from the bulbs. Ingestion can cause vomiting, breathing issues, and weakness.
Hyacinth (hyacinth orientalis)
Sap and bulbs, much like tulips, are major skin irritants.
Azaleas and Rhododendrons
A toxin called grannotoxin can be found in the leaves, flowers, nectar and pollen. Ingestion can cause heart problems, vomiting, dizziness, and extreme weakness
Black Locust (Robina Psudocacia)
All parts but the flowers are poisonous. Can cause weak pulse, upset stomach, headache, and cold extremities.
All parts are toxic. Causes burning, fever, vomiting and in extreme cases kidney failure.
All parts are poisonus. Sap is a skin irritant and bright berries are deadly. Irritation of the throat, internal bleeding, weakness, and vomiting are all symptoms.
All parts can cause severe stomach upset, skin irritation, delirium, tremors, convulsion, headaches, and heart failure.
All parts are poisonous, and the sap is a skin irritant. Can cause bruning, vomiting, dizziness, nervous depression, and convulsions.
Often used as a cake topper, Hydrangea actually contains levels of cyanide. Ingestion leads to vomiting, headache, and muscle weakness.
Berries contain toxins that can cause visual problems, weakness, vomiting, heart problems and even death.
Contains a toxin known as Lobelamine that can cause heart problems, vomiting, tremors and paralysis.
Yellow Jessamine (Gelsimium semperviens)
All parts are toxic. Pollen and nectar are fatal to children.