God is the One Who can create anything - man simply discovers. God created creatures and plants to pro-create themselves, after their own kind, as God had established.
To say that humans are not created in the image of God is NOT the same as saying God does not have a will regarding the birth or life of man. But Scripture says God created Adam and Eve in His image, and Scripture says all offspring are created in the image of their Earthly parents.
Perhaps this might help you?
From Saint Thomas Aquinas
That all Things aim at Likeness to God
All things evidently have a natural appetite for being, and resist destructive agencies wherever they are threatened with them. But all things have being inasmuch as they are likened to God, who is the essential subsistent Being, all other things having being only by participation. All things therefore have an appetite for likeness to God, making that their last end.
4. All created things are some sort of image of the prime agent, God: for every agent acts to the production of its own likeness: now the perfection of an image consists in representing its original by likeness thereto: the image in fact is made on purpose. All things then exist for the attaintment of the divine likeness; and that is their last end.*
*Note
Some attribute or other of the Creator is relucent in every creature, according to the being which it has and the energy it displays, not however that attribute which serves best the immediate purposes of man, and ministers most to his security and comfort. This world is not exactly built for an hotel.