Brussels Sprouts can be grown in all areas of the United States. Their long time to maturity and sensitivity to nutrient imbalances have given them a reputation for being difficult. With well worked, fertile soil, regular feedings and well-timed plantings, you can grow the most delicious Sprouts you’ve ever had! Brussels Sprouts are biennial, meaning they won’t send out a flower until second year of growth, often triggered into flowering by the end of a winter season.