Swenson's work shows strong use of imagery and use of eroticism. She continually questions existence and writes much on the topic of love. Her love poems concerned "human nature, the natural world, geography, and invention. They are poems of intense love between women, written at a time when that genre was rare in poetry" (Schulman). Although she did not go out of her way to make known her lesbian sexual identity, she also did not hide it. In her career she has turned down publication offers to use her poetry in a compilation of lesbian writing, yet she did agree in one case, which she explained as a tasteful collection she did not mind contributing to. Her poetry collection
The Complete Love Poems of May Swenson focused mostly on poems in which sexual imagery is especially abundant. One example, the poem "In the Yard" reads:
- :You are,so yummy, broughtsome fruit. Split mean apple. We'llget red, whitehalves each, ourjuice on theIndian spread. (Nature 94)
Swenson's style is described as rhythmic. Her creative style merges in her writing with her interest in plant and animal behavior with works such as "The Cross Spider". As well as natural themes, some of her work focuses on scientific research, for example the exploration of space. Fascinated by perception, much of Swenson's work contains key themes of how this human perception can be found in landscapes and wider contexts. One source comments that her use of nature and sexuality are not used separately, but that nature is something we are all part of, and in that commonality we share energy derived from sexuality.