Ive had corn grow on accident (fell off bird feeder in the spring) so yea its possible. but it wont grow as well. Try to get it covered with soil. Without the equipment its impossible to make large plots. I did a small one this past year of sweet corn for the deer and my family to eat, and with the equipment I had it was tedious work (rototiller and hand planted rows). If a couple seedlings sprout in a bunched up group pull the slower growing ones out so they dont steal nutrients from faster growing seedlings.