Here are the worst irritating, poisonous and invasive plants — the ones you should always avoid. It's covered with pretty, purple flower spikes from late summer through fall. A long-lived ...

Poison hemlock, a biennial in the Apiaceae family, is an invasive herbaceous plant that prefers moist, shaded habitats subject to frequent disturbance but can be found in a range of habitats ranging ...

Poisonous invasive species don’t deter the hungry Australian bluetongue lizard. A new paper in the American Naturalist found that the native lizards that eat toxic mother-of-millions plants are ...

Invasive Species Council's Dr Carol Booth recently ... not a tree we should plant in Australia," adding "It's also poisonous to livestock and humans." If ingested by a human, Robinia can cause ...

Many of our commonly cultivated house and garden plants contain toxins. During my 35-plus years in veterinary practice, I treated many patients for either known or suspected toxic plant ingestion.