Unlike milkweed and mistletoe, whose ecological benefits often outweigh the dangers they pose in our gardens, poison hemlock offers no positives.
Many bulb plants, including tulips, daffodils and some lilies and irises, can cause skin irritation when touched, and gastric distress if eaten.
Sago palms and closely related cardboard palms cheer us up with their wispy, tropical feel. But if you have kids or pets, they're not so great. Ingesting even a small amount can have serious consequences.
The white, latex sap from these plants irritates the skin and eyes, even causing blisters and temporary blindness in some cases.
"These are two other super-common houseplants that have chemical compounds that can cause nausea, vomiting and diarrhea if eaten," says Hancock.
Ficus plants, including rubber trees and fiddle-leaf figs, also produce an irritating white sap that can cause dermatitis on your skin, and vomiting if eaten.
"Pretty much every houseplant in the aroid family contains tiny crystals in its cells that can cause intense irritation to the mouth and throat if consumed," says Hancock.
There's no way I'm getting rid of my aloe plant. It's kept my skin intact through countless burn fumbles on the stove.