I have never found them wild.
BUT, they might be able to be used for sex. So, what did you use them for?
Especially if it generates some kind of heat. I'll leave the rest open for speculation.
Being eclectic Wiccan, if I found wild onions growing in my garden I would cultivate the bulbs for future green leek leaves for cooking and veneration to Deities associated with them, particularly the Goddess Hecate. In some beliefs, onions and garlic were symbolically used to ward off negative energies. Garlic being another related bulb plant lasts longer dried and can be used on altar spaces and displayed on walls as in numerous countries like chilis. I have the smaller "bunching onions" that I planted in my home vegetable patches that I maintain in front of a statue of a garden Gnome honoring plant spirits.
Onions in Mythology
So many various times I see those trying to find fantastical and near charlatanistic approaches to Sorcery and Magick. Magick and Sorcery The Life Forces that infill and generate each of us is sustained by the very simple acts and actuations of ingesting and consuming other wild or domesticate life forms. This is essential the High Magick spoken of in elixirs as well as the Wavelengths of energies often called Intelligences or spirits emanating from every sphere and radiance of anything existent, even a rock like Amethysts or Crystal has a frequency vibration. With some they have little to no effect or affect, with others the smallest traces can bring about quickened enthusiasms and exuberant ecstasies. So when you satana's horse really a goat dog mock and attempt to mutter belittling statements of importance to you, and disregard anothers just as important experiences to the other you have effectively put your blinders of plowing in a single line over your eyes, and became the same as a person unable to discover possibilities outside or other than your Sinicism will allow you to comprehend or experience. Great- You know apparently if only tracking or tracing a single straight line, if their are variances in terrain you come to a halt. No advice though.
What are you carrying forth about now?