Is it symbolic to create images in poetry?

Of course not. Metaphor, personification, contrast and contrast can all create images.

For example, "Jasper is dressed as a tree, and thousands of green tapestries hang down" is a figurative technique to shape the image of willow; Another example: "All flowers often hate the wind, but Huayang loves the wind alone" is to use contrast to shape Huayang's image.