The primary purpose of this project was to assess the influence of the plant growth regulators (PGS’s), ethephon, and gibberellic acid on the uniformity of maturity for the vegetable brassicas, cauliflower and broccoli. The influence of seed germination date on crop maturity was also examined. The direction of the research expanded in the later stages of the project to investigate the role of uniformity of seed germination on the rate of crop maturity. The project was conducted from September 2006 to March 2010.