What does marianne moore mean when she says "imaginary gardens with real toads in them" in this excerpt from "poetry"?

Poets have the difficult task of incorporating real emotions and facts into the settings they imagine.

Marianne Moore was part of the imagist movement, and she advocated the use of extremely real elements in the imaginary settings that poetry produces. She believed that the difficult task of the poem was to add these very real themes (the real toads) that resonate will all humans into their fanciful, imaginary worlds (the imaginary gardens). This is the only way in which poetry would become genuine.

in the 1890s, southern states enacted a new form of black codes, called “jim crow” laws. these laws made it illegal for blacks and whites to share public facilities. this meant that blacks and whites had to use separate schools, hospitals, libraries, restaurants, hotels, bathrooms, and drinking fountains.

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