Greenstar Plant Products, Inc. is an internationally recognized leader in the manufacturing of plant nutrients. Our brands ar ... e Grotek, Super Green and Earth Safe. Grotek, which the company has been producing since 1998 and is sold in numerous countries internationally. Earth Safe Brand and Super Green are exclusive to Canada. Greenstar Plant Products, Inc. produces premium horticultural products and solutions for global, domestic and commercial use. Our brands are utilized by commercial operators including growers, landscapers, greenhouses, nurseries, organic farms, as well as independent retailers. Whether you’re looking to purchase high-quality fertilizer for your commercial operation or garden centre or switch your municipality to our recommended gardening methods, when you select our products you can be confident you’ve made the right choice. read more