Onions Experiments

I have planted 80 yellow onion and 80 purple onion (both Allium cepa) sets very deeply in Water Wise Container Gardens, with the intent of harvesting most as scallions. But I will leave a few into summer to see if they even make bulbs and if so, does it escape decay in the heat and humidity. I've always heard that matters of day length in central Florida are why onions bulbing here is uncommon vs. a given up north. I am almost done planting 160 white onion sets (Allium cepa)  to see how they grow in the garden just outside my kitchen back door.