The first crops were probably root crops like turnips. Grains and green vegetables were probably first grown as crops later.
Einkorn and emmer wheat and wild barley may have been cultivated by Natufians (stone-age people) around 7000Bc at Ali Kosh on the border of Iran and Iraq.
Pumpkins are grown on bushes or on vines like these throughout Europe and North America.
Flax was the most important vegetable fibre in Europe before cotton. It is still used in make linen.
Pumpkins and beans were cultivated in Mexico c.7000 Bc.
People in the Amazon have grown manioc to make a flat bread called cazabi for thousands of years.
Corn was probably first grown about 9000 years ago from the teosinte plant of the Mexican highlands.
Russian botanist N. I. Vavilov worked out that wheat and rye came from the wild grasses of central Asia, millet and barley from highland China and rice from India.
Millet was grown in China from c.4500Bc.
In northern Europe the first grains were those now called fat hen, gold of pleasure and curl-topped lady’s thumb.
Sumerian farmers in the Middle East c.3000Bc grew barley, wheat, flax, dates, and grapes.
Beans, bottle gourds and water chestnuts were grown at Spirit Cave in Thailand 11,000 years ago.