Bump 1.5CF Growers Mix. Organic Growers Mix. A carefully formulated growing medium made with all-natural ingredients including our exceptional composts. The result is a soil designed to provide container plants an ideal balance between water retention, soil texture, drainage and aeration. Ingredients include Mycorrhizal Fungi which form symbiotic relationships with plant roots allowing the uptake of more nutrients from the soil. They also increase plant tolerance to environmental stress and play a role in soil aggregation and the stimulation of microbial activity. Depending on the plant species, growing practices and conditions, benefits to plants can include increased uptake of phosphorous. Other key ingredients include Worm Castings, Lobster and Crab Shell, Kelp Meal, Dehydrated Poultry Manure, Peruvian Seabird Guano, Sphagnum Peat Moss, Composted Cow Manure, Aged Bark, Dolomitic Lime and Coir (coconut fiber).