Jack's Classic Blossom Booster 10-30-20 - 1.5 lbs

Jack's Classic Blossom Booster 10-30-20 is a Jack’s Classic blossom booster fertilizer and water soluble plant food made to promote more flowers and brighter colors.

Built around a high phosphorus formulation, this bloom fertilizer is suited to periods of bud set when plants are gearing up to flower. It’s designed to increase the number and size of blossoms, helping flowering displays look fuller and more finished. Gardeners also reach for it when they want brighter colors and a stronger bloom presence, especially for containers and other plantings where flower impact matters most.

This professional formula features a 10-30-20 NPK and is described as feeding through both the roots and the leaves, supporting consistent nutrient uptake in a range of growing situations. Alongside the core macronutrients, it’s a “with micronutrients” formula, including magnesium plus micronutrients such as iron, manganese, zinc, copper, boron, and molybdenum, with several provided in chelated forms.

Jack's Classic Blossom Booster 10-30-20 is positioned for indoor and outdoor plants, making it an easy match for seasonal gardens as well as year-round indoor growing. It’s intended for flowering plants and is commonly associated with popular bloomers like geraniums, impatiens, begonias, marigolds, hydrangea, bougainvillea, hibiscus, orchids, and violets. It’s also described as great for vegetables and fruit, including fruit trees and berry bushes, and it’s often chosen for flowering beds, containers, and hanging baskets where consistent bloom quality is the goal.

This is a good fit for growers who want a water soluble plant food that targets bloom development with a high phosphorus formulation, supports uptake through roots and leaves, and includes micronutrients for well-rounded flowering-plant nutrition.