This isn’t (as our administrator may have thought) how oranges grow, but rather a great way to deal with slugs.
Simply halve an orange, hollow it out, and put it round side up into your soil. Slugs will crawl into these wee domes overnight, so you can simply pick up the oranges the next morning and relocate the slugs far away from your precious plants. Birds love to eat these guys, so if you’ve a bird table you could offer them some limace à l’orange!
Just… don’t relocate them to The Hidden Gardens, okay?