Granex was a cooperative effort (USDA and Texas Agric. Expt. Sta., College Station) 1951). The major problem with growing short day onions in the North is that they are programmed to begin bulbing in March (10-12 hours of daylight. If they don't reach adequate plant size before bulbing they will do their best, result small onions. Bending over tops as the bulbs reach maturity is common practice. Not sure it speeds up the process, They will naturally fall over as the onion matures. Flower stalks (bolting) occurs under some weather conditions and are bad news to a grower. Resistance to bolting is a major feature of newer varieties. I rarely have any bolt today.
