"Queering Nature" is the new version of "Lysenko-ing Nature" - but this time, this time, it's definitely the Right Side of History, just wait and see...
</sarcasm>
If I wanted to be fair, I could say that plants and fungi do have interesting ways of crossbreeding and speciating (e.g. haplodiploid life cycles, hundreds of mating types in some fungi, polyploidy in domestic wheat), which would be considered "unconventional" within the animal kingdom.
But it would be awfully human-centric 21st-century-centric Anglo-centric colonialistic behaviour to paint these biological realities in Queer colours; perhaps it's one of those irregular verbs only available to TRSOH 