Which of these plants is NOT considered poisonous?

Wheat is not considered poisonous and is widely cultivated as a staple food crop around the world. It is a common source of carbohydrates and is used to produce flour for bread, pasta, and many other food products. Wheat has been consumed safely for thousands of years and is recognized for its nutritional value, providing essential nutrients such as fiber, vitamins, and minerals.

In contrast, pokeweed contains toxic compounds that can be harmful if ingested. Rhubarb leaves also contain oxalic acid, which is toxic in large quantities, and while the stalks of rhubarb are safe to eat, the leaves should never be consumed. Rye, while typically safe for consumption, can pose risks when contaminated with certain fungi that produce harmful mycotoxins, but as a plant, it is not classified as poisonous.

Understanding the edibility of different plants is crucial for food safety and nutrition, which is why knowing that wheat is safe highlights the importance of distinguishing between edible and toxic varieties.