Plants

The citron is believed to have originated in India, where it was found in valleys in the foothills of the northeastern Himalayas.

A characteristic feature of the sycamore that distinguishes it from other maples is its bark.

Some pears are deceptively similar to apples.

Rowan varieties, specially adapted for the food industry, have been created.

Nettle seeds are called nuts and appear at the top of the plant in mid-summer. They are the size of a pinhead and there can be several thousand of them on a single plant.

The nutrients contained in parsley are resistant to freezing and drying, so storing parsley is not too difficult.

Beets can lower blood pressure.

Vanilloideae are prevalent in the tropics, reaching the temperate zone in eastern North America, eastern Asia, and southern Australia.

Corn has also played an important role in the history of the United States. When the first settlers arrived on the North American continent in December 1620, they lacked food, and many died. Those who survived were helped by Indians who shared food with them and showed them how to grow corn, squash, and legumes.

Canola oil used to be notorious for its high content of erucic acid.