What causes the diversity of cultivated plants?

It is due to the impact on them by humans, or in scientific terms – selection. It was not enough for a man to cultivate plants, he wanted to change them. Therefore, he bred and displays more productive varieties, or varieties that are more resistant to drought or cold. In the case of flowers, man has always wanted to bring out something new, not similar to what has grown on the planet before. This explains such a huge number of roses, violets and other flowers and ornamental plants.