New Plant Thrive from Alpha BioSystems contains a concentrated dose of the microbes and Mycorrhizal fungi already found in nature. Thrive is all-natural, giving genuine — not artificially enhanced — growth results. Thrive can be used with all types of fertilizers. In addition to enhancing the bioavailability of fertilizer and decaying organic matter, the bacterial in THRIVE colonize on the hair like structures of the plant root to increase nutrient absorption and stimulate growth.