Good question, not an easy answer. We have no information that indicates a larger curd/head; however, potassium—and nitrogen and phosphorus—are important nutrients for the plant’s success. We suggest that you click here for more details (this page speaks to soil quality and more that may relate specifically to your conditions, even if you are not in Minnesota): http://www.extension.umn.edu/garden/yard-garden/vegetables/growing-broccoli-cabbage-and-cauliflower-in-minnesota/
Good question, not an easy answer. We have no information that indicates a larger curd/head; however, potassium—and nitrogen and phosphorus—are important nutrients for the plant’s success. We suggest that you click here for more details (this page speaks to soil quality and more that may relate specifically to your conditions, even if you are not in Minnesota): http://www.extension.umn.edu/garden/yard-garden/vegetables/growing-broccoli-cabbage-and-cauliflower-in-minnesota/