| African Violet | Heart | Leaves & stems are poisonous |
| Amaryllis | Intestines & Brain | |
| Anthurium | Kidney & Liver | |
| Apricot | Lungs | Pit contains cyanide |
| Autumn Crocus | Intestines & Heart | |
| Azalea | Intestines | |
| Begonia | Kidney & Liver | |
| Caladium | Mouth/Skin | Severe irritation of mouth and tongue |
| Calla lily | Kidney & Liver | |
| Century plant (Agave) | Heart | Saponins in root may be fatal |
| Choke cherries | Lungs | Unripe berries contain cyanide |
| Chrysanthemum | Skin | Rotten plants cause severe skin irritation |
| Daffodil | Intestines | Bulbs cause intestinal upset/death |
| Delphinium | Brain | |
| Dieffenbachia | Intestines & Lungs | May cause fatal swelling of throat |
| Dumbcane (Dieffenbachia) | Mouth/Skin | Juice causes swelling of mouth/throat |
| Elderberry | Lungs | Unripe berries contain cyanide |
| Elephant’s ear (Colocasia) | Mouth/Skin | Severe irritation of mouth and tongue |
| English Ivy | Lungs | Berries & leaves cause breathing difficulty & coma |
| Eucalyptus | Heart | Cyanide poisoning |
| Four o’clock (Mirabilis) | Intestines | Roots and seeds cause stomach upset |
| Foxglove | Heart | |
| Heliotrope | Heart | Leaves are poisonous |
| Hydrangea | Lungs | Stomach upset and bloody diarrhea |
| Iris | Intestines | |
| Kalanchoe | Heart | |
| Lantana | Liver | |
| Lily of the valley | Heart | |
| Mistletoe | Heart & Brain | |
| Morning glory | Brain | Seeds are toxic to birds |
| Oleander | Heart | Very poisonous, one leaf can be fatal |
| Peach | Lungs | Pit contains cyanide |
| Pencil cactus | Intestines | |
| Peperomia | Heart | Leaves are poisonous |
| Petunia | Heart | Contains poisonous alkaloids |
| Philodendron | Kidney & Liver | |
| Poinsettia | Mouth/Skin | Juice is irritating to mouth/tongue/intestines |
| Prayer plant | Intestines | Leaves are toxic |
| Primrose | Skin | May cause severe skin irritation |
| Rex begonia | Intestines | Causes vomiting |
| Rhubarb | Kidney & Liver | |
| Rubber Plant (Ficus) | Skin | Severe skin irritation |
| Sago Palm | Heart & Liver | Wobbling, liver inflammation |
| Scheffelera | Kidney & Liver | |
| Sweet violets | Intestines | Rhizomes and seeds cause upset stomach |
| Taxus | Heart | |
| Wormwood | Brain | Oils can cause brain damage |
