5. Now no tree of the field was yet on the earth, neither did any herb of the field yet grow, because the Lord God had not brought rain upon the earth, and there was no man to work the soil.
When the creation of the world was completed on the sixth day, before man was created, no herb of the field had yet grown. And on the third [day], where it is written:“Let the earth bring forth,” they [the plants] had not yet emerged, but they stood at the entrance of the ground until the sixth day. And why? Because He had not caused it to rain, because there was no man to work the soil, and no one recognized the benefit of rain, but when man came and understood that they were essential to the world, he prayed for them, and they fell, and the trees and the herbs sprouted. — [from Chul. 60b]