--- product_id: 14730146 title: "MSU Orchid Fertilizer 13-3-15 Reverse Osmosis, Rain, Tap (City) Water Formula 5 Pounds" brand: "jim's orchid supplies" price: "448.20 DT" currency: TND in_stock: true category: "Jim's Orchid Supplies" url: https://www.desertcart.tn/products/14730146-msu-orchid-fertilizer-13-3-15-reverse-osmosis-rain-tap store_origin: TN region: Tunisia --- # Includes essential micro-nutrients Instantly water soluble pellets 13-3-15 NPK precision formula MSU Orchid Fertilizer 13-3-15 Reverse Osmosis, Rain, Tap (City) Water Formula 5 Pounds **Brand:** jim's orchid supplies **Price:** 448.20 DT **Availability:** ✅ In Stock ## Summary > 🌸 Feed your orchids like a pro—because your green space deserves the MSU edge! ## Quick Answers - **What is this?** MSU Orchid Fertilizer 13-3-15 Reverse Osmosis, Rain, Tap (City) Water Formula 5 Pounds by jim's orchid supplies - **How much does it cost?** 448.20 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/14730146-msu-orchid-fertilizer-13-3-15-reverse-osmosis-rain-tap) ## Best For - jim's orchid supplies enthusiasts ## Why This Product - Trusted jim's orchid supplies brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Micro-Nutrient Boost:** Infused with iron, manganese, zinc, copper, boron, and molybdenum for lush, healthy foliage and blooms. - • **Precision NPK Balance:** Optimized 13-3-15 formula fuels vibrant orchid growth with perfect nitrogen, phosphate, and potassium ratios. - • **Trusted Academic Formula:** Developed by Michigan State University, ensuring scientifically-backed orchid nutrition for serious growers. - • **Humidity-Responsive Color:** Unique pellet color shifts with moisture levels—an exclusive visual cue of freshness and potency. - • **Water-Soluble Convenience:** Dissolves instantly in cold water for hassle-free feeding, compatible with reverse osmosis, rain, or tap water. ## Overview MSU Orchid Fertilizer 13-3-15 is a scientifically formulated, water-soluble nutrient blend designed specifically for orchids. Featuring a precise balance of macronutrients and essential micronutrients, it supports vibrant growth and blooming. The unique pellet color changes with humidity, signaling freshness without affecting performance. Developed by Michigan State University, this 5-pound pack offers easy mixing with reverse osmosis, rain, or tap water, making it the go-to choice for millennial plant enthusiasts seeking professional-grade orchid care. ## Description Guaranteed Analysis Macronutrients: 13.0% Total Nitrogen (Nitrate Nitrogen 12.5%, Ammoniacal Nitrogen 0.7%) 3% Available Phosphate Acid (P2O5) 15.9% Soluble Potash (K2O) 8.0% Calcium (Ca) 2% Magnesium (Mg) Derived from calcium nitrate, magnesium nitrate, potassium nitrate and monopotassium phosphate Micronutrients: 0.177% Iron (Fe) 0.088% Manganese (Mn) 0.044% Zinc (Zn) 0.044% Copper (Cu) 0.018% Boron (B) 0.018% Molybdenum (Mo) Derived from Iron EDTA, manganese sulfate, zinc sulfate, copper sulfate, boric acid, ammonium molybdate GreenCare started a revolution in the fertilizer industry when it introduced its blends incorporating calcium, magnesium and complete minor elements. Tinny pellets with fine powder. Color from off whitish/brown to whitish/blue/green. Instantly water soluble, even in cold water. All information comes from the manufacturer. If any the manufacturer would be solely responsible for any warranties implied or not. Granular fertilizers can start to liquefy in the bag due to contact with moisture/humidity. This will vary depending on humidity and how often the container is opened. This does not mean the fertilizer has gone bad. You can still use in liquefied state. ## Features - MSU ORCHID Fertilizer 13-3-15 Reverse Osmosis, rain, tap (City) water formula 5 pounds. Small pellets with fine powder. Color from off whitish/brown to whitish/blue/green. - Formulated specifically for orchids by Michigan State University (MSU) - 1pound = 50 + teaspoons. Mix at 1/2 to 1 Teaspoon per gallon of water. - you only need a very small amount of water to bring out the color in the bag and the presence or absence of the color will often times depend on the humidity at the time of mixing. In the end, none of this makes any difference to the plant. Bill Argo, Ph.D. Blackmore Company 10800 Blackmore Ave. Belleville, MI 48111 - Water soluble fertilizer. Must be mixed with water. One downside to MSU is it is a moisture magnet. this can effect color some. Granular fertilizers can start to liquefy in the bag due to contact with moisture/humidity. This will vary depending on humidity and how often the container is opened. This does not mean the fertilizer has gone bad. You can still use in liquefied state. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00J1BH5QG | | Best Sellers Rank | #293,244 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #4,163 in Garden Fertilizers | | Brand Name | Jim's Orchid Supplies | | Coverage | Medium | | Customer Reviews | 4.6 4.6 out of 5 stars (26) | | Item Form | Granules, Powder | | Manufacturer | GREENCARE Fertilizers, INC | | Mixing Ratio | 1/2 to 1 Teaspoon per gallon of water | | Model Number | MSURO5 | | Number of Items | 1 | | Part Number | MSURO5 | | Target Species | Orchid | | Unit Count | 80 Ounce | ## Product Details - **Brand:** Jim's Orchid Supplies - **Item Form:** Granules, Powder - **Manufacturer:** GREENCARE Fertilizers, INC - **Number of Items:** 1 - **Number of Packs:** 1 ## Images ![MSU Orchid Fertilizer 13-3-15 Reverse Osmosis, Rain, Tap (City) Water Formula 5 Pounds - Image 1](https://m.media-amazon.com/images/I/71vjbgzlC7L.jpg) ![MSU Orchid Fertilizer 13-3-15 Reverse Osmosis, Rain, Tap (City) Water Formula 5 Pounds - Image 2](https://m.media-amazon.com/images/I/71A-bmqCN0L.jpg) ![MSU Orchid Fertilizer 13-3-15 Reverse Osmosis, Rain, Tap (City) Water Formula 5 Pounds - Image 3](https://m.media-amazon.com/images/I/81bZ2+vG9zL.jpg) ![MSU Orchid Fertilizer 13-3-15 Reverse Osmosis, Rain, Tap (City) Water Formula 5 Pounds - Image 4](https://m.media-amazon.com/images/I/81f-y9Zg1fL.jpg) ![MSU Orchid Fertilizer 13-3-15 Reverse Osmosis, Rain, Tap (City) Water Formula 5 Pounds - Image 5](https://m.media-amazon.com/images/I/81N5P2V5iQL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/14730146-msu-orchid-fertilizer-13-3-15-reverse-osmosis-rain-tap](https://www.desertcart.tn/products/14730146-msu-orchid-fertilizer-13-3-15-reverse-osmosis-rain-tap) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-14*