Talk to an Expert 1-877-658-9537 About Press PRODUCTS APPLICATIONS SERVICES CONTACT Home/Commercial Growing Commercial Growing Manufactured from the highest quality technical grade materials, our water-soluble and control-release fertilizers for the greenhouse and nursery professional provide the highest level of balanced nutrition available for fertilizing plugs, flowers or vegetables grown in a soil medium or hydroponic system. BROWSE FORMULATIONS How are Masterblend & Mastercote Made? Free of excess salts and other chemical impurities which can damage roots and foliage, the balanced nutrition and pure composition ensure optimum growth rates and predictable blooming response for your greenhouse crops. Our water-soluble fertilizer contains chelated micronutrients for the most effective delivery of nutrients to your plants. Our fertilizers are blended in highly environmentally controlled blending rooms to minimize cross-contamination and exposure to the elements. WATER-SOLUBLE FERTILIZERS Product details for our water-soluble fertilizers. VIEW FORMULAS CONTROL-RELEASE FERTILIZERS Product details for our control-release fertilizers. VIEW FORMULAS Offering a complete line of superior products for greenhouse, nursery, and turf care professionals including water-soluble, control-release and granular fertilizers. Our fertilizer solutions are not only a complete plant food, but they are compatible with most insecticides, herbicides or fungicides on the market. WATER-SOLUBLE FERTILIZERS 4-18-38 Tomato Formula Ideal for tomatoes, peppers, leafy greens & more. Soil-based and hydroponic growing. MORE DETAILS 9-45-15 Plant Starter A plant starter for fertilizing transplants, newly set cuttings, and young seedlings. MORE DETAILS 10-30-20 Blossom Booster Use as a booster for improved bud set, bud count, color and size of flowers. MORE DETAILS 10-52-10 Plant Starter Provides extra water soluble phosphorous to help stimulate root development. MORE DETAILS 12-0-43 Cut Mum Finisher Formulated to replace Potassium Nitrate as a Mum finisher. MORE DETAILS 13-2-13 Cal Mag Formula Recommended for plugs due to its high Calcium and Magnesium content. MORE DETAILS 14-0-14 Plug Formula Formulated for all crops that indicate a sensitivity to the Ammoniacal form of Nitrogen. MORE DETAILS 15-0-15 Dark Weather Formula High Nitrate formula-especially recommended for bulbs and crops. MORE DETAILS 15-3-20 Pansy Formula Recommended for compact, lush pansy plants. MORE DETAILS 15-5-25 Poinsettia Formula Can be used during the entire crop cycle; or as a finisher with recommended formulas. MORE DETAILS 15-10-30 Pot Mum Formula Recommended for use on Pot Mums, Geraniums and Poinsettias. MORE DETAILS 15-15-15 Geranium Special Gives a very fast response and is specifically designed to produce the highest quality Geraniums. MORE DETAILS 15-16-17 Soil-Less Mix Produced with a higher Nitrate N giving the grower more precise control. MORE DETAILS 17-4-17 Pot Plant Formula Neutral formula designed to keep the pH change in the root zone to a minimum. MORE DETAILS 17-5-17 Cal-Mag Formula A balanced growth formulation with a high nitrate content, and no urea. MORE DETAILS 20-3-19 Petunia Formula Elevated levels of Iron and Magnesium and specifically designed for Petunias and other high iron demanding crops. MORE DETAILS 20-5-30 High Potash Formula Designed for greenhouse growing media which have built up appreciable amounts of available Phosphorus. MORE DETAILS 20-7-20 Acid Formula Designed for use on crops that require acidic soil conditions. MORE DETAILS 20-7-20 High Mag Formula Designed for use on crops that exhibit symptoms of magnesium deficiencies. MORE DETAILS 20-10-20 Soil-Less Mix Specifically designed for application to soil-less growing media. MORE DETAILS 20-20-20 General Purpose An all-purpose formula, safe for all growing plants. MORE DETAILS 21-6-20 All-Purpose Formula A slightly acidic, all-purpose formula, use where soil requires a boost in acidity. MORE DETAILS 21-7-7 High Acid Formula Designed to give heavy acidifying action, especially for Azaleas grown under hard water conditions. MORE DETAILS 30-10-10 Orchid Special Designed for use in fir bark for potting orchids due to the higher Nitrogen demands of the growing medium. MORE DETAILS CONTROL-RELEASE FERTILIZERS Mastercote 13-13-13 4CTR A balanced fertilizer with a 3-4 month release rate. MORE DETAILS Mastercote 17-17-17 4CTR A balanced fertilizer with a 3-4 month release rate. MORE DETAILS Mastercote 18-6-12 +Minors 8CTR A balanced fertilizer that includes minors with a 8-9 month release rate. MORE DETAILS Masterblend sales consultants have real world experience in the commercial growing market. Consult with your knowledgeable representative to identify the right products to support your fertilizer program. PARTNER WITH US TODAY Need a unique formulation? Our team will work with you to ensure you receive the most effective and highest quality blend to meet your specifications. CONTACT US TODAY GET IN TOUCH Toll free: 877-658-9537 Phone: 815-416-1460 Fax: 815-416-1464 Headquarters Masterblend International-Tyler Enterprises 4673 Weitz Rd. Morris, IL 60450 Email Us STAY CONNECTED Sign up for our eNewsletter to receive product information, company updates, industry news and special announcements via email. CLICK TO SIGN UP! FOLLOW MASTERBLEND FOLLOW TYLER Copyright © 2021 Masterblend International. All rights reserved. Site Design by Krizman Design Studio The information contained within this website is intended to provide information about available products and services. 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