WonderBloom Flower Planting Soil The makers of SUPERSOIL® POTTING SOIL have developed WONDERBLOOM FLOWER PLANTING SOIL especially for flowering plants. FLOWER PLANTING SOIL contains an exclusive blend of nature's finest ingredients: forest products, including fir and redwood bark, Canadian sphagnum peat moss, perlite, and washed sand. It is rich in the nutrients plants need to produce vigorous, colorful blooms. WONDERBLOOM FLOWER PLANTING SOIL is specially formulated with a blend of sea kelp, bone meal, alfalfa meal, blood meal and cottonseed meal. Ready to use right from the bag in containers or raised beds, with no mixing required. With WONDERBLOOM FLOWER PLANTING SOIL there's no need to fertilize for up to 6 months!