BOLSTER GRANULAR 4-4-4 + Iron
25 years of applied research have consistently proven Suståne Natural Fertilizers to be the leader in plant establishment, soil physical improvement, and biological disease suppression. Suståne Triple Four is made from a thorough, aerobic composting process unlike any other organic fertilizer on the world market today. This basic Suståne contains 3% organically chelated iron plus all major and minor elements known to be essential for plant photosynthesis. This is an 80% Slow Release Nitrogen ratio natural fertilizer rich in humic substances, is foolproof, and will not cause “fertilizer burn” to plant materials. To improve on Basic Suståne’s unsurpassed plant establishment, the following components have been added: