NutriStar Bougainvillea is a premium granular fertilizer designed to unlock vibrant color and explosive blooms in bougainvilleas and other flowering vines. With a balanced formula of 17-7-10, it features four sources of nitrogen, low-salt potassium, and Epsom salt (magnesium sulfate) to encourage strong root development, lush foliage, and extended bloom cycles. This unique blend includes slow-release nitrogen to provide consistent feeding every 14 days until blooming starts, then just once a month to keep flowers going strong. We also incorporate gypsum and elemental sulfur to help acidify the soil and enhance nutrient uptake, perfect for your flowering vines.