--- product_id: 325417931 title: "Petramax Liquid Nitrogen Fertilizer 28-0-0 NPK - 32 Oz Spring & Summer Liquid Grass Fertilizer for Lawn, Spray on Easy to Apply for Deep Green Lawn Care - Slow Release High Nitrogen Turf Builder" brand: "petra" price: "¥10525" currency: JPY in_stock: true reviews_count: 13 url: https://www.desertcart.jp/products/325417931-petramax-liquid-nitrogen-fertilizer-28-0-0-npk-32-oz store_origin: JP region: Japan --- # 70% quick + 30% slow release N 28-0-0 ultra-high nitrogen Treats up to 12,800 sq. ft. Petramax Liquid Nitrogen Fertilizer 28-0-0 NPK - 32 Oz Spring & Summer Liquid Grass Fertilizer for Lawn, Spray on Easy to Apply for Deep Green Lawn Care - Slow Release High Nitrogen Turf Builder **Brand:** petra **Price:** ¥10525 **Availability:** ✅ In Stock ## Summary > 🌿 Turn heads with the greenest lawn on the block—fast, flawless, and fuss-free! ## Quick Answers - **What is this?** Petramax Liquid Nitrogen Fertilizer 28-0-0 NPK - 32 Oz Spring & Summer Liquid Grass Fertilizer for Lawn, Spray on Easy to Apply for Deep Green Lawn Care - Slow Release High Nitrogen Turf Builder by petra - **How much does it cost?** ¥10525 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/325417931-petramax-liquid-nitrogen-fertilizer-28-0-0-npk-32-oz) ## Best For - petra enthusiasts ## Why This Product - Trusted petra brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Application:** Mix and spray easily with recommended ratios for precise lawn coverage. - • **Dual-Action Nitrogen Release:** 70% quick-release for instant results, 30% slow-release for sustained growth. - • **Turbocharge Your Lawn Growth:** Ultra-high nitrogen formula delivers rapid green-up and thick turf. - • **Universal Grass Compatibility:** Perfect for all grass types—warm or cold season, new or established lawns. - • **Proudly American & Customer-Focused:** Family-owned with 100% satisfaction guarantee and expert US-based support. ## Overview Petramax Liquid Nitrogen Fertilizer 28-0-0 is a premium 32 oz liquid turf builder designed for professional-grade lawn care. Featuring a powerful 28% nitrogen content with a 70/30 quick and slow release formula, it promotes rapid greening and sustained growth across all grass types. Easy to apply with simple mixing ratios, it covers up to 12,800 sq. ft. per treatment. Made by a trusted American family-owned company, it comes with a satisfaction guarantee and dedicated customer support. ## Description We empower DIYers to achieve professional results PetraTools is a family-owned American business. Our mission is to empower DIY'ers to achieve Professional Results with Superior Products. We love our yards and outdoor spaces and having the right tools needed to make them beautiful! Whatever you do, the PetraTools team is 100% committed to helping you achieve results you can be proud of! Our headquarters is located in Carlisle, Pennsylvania where our customer support team is always waiting to help. We offer free returns and warranties on our products. If you ever have a problem, simply call our 800# and our friendly team will take care of it for you - GUARANTEED! Our team is here to help you with any questions or concerns. Give us a call toll-free at (800) 613-6889, Mon - Fri | 9am - 6pm EST. Our premium sprayer line from small, compact sprayers to large wheeled sprayers Lawn solutions for lawn care, soil treatment, and plant care ## Features - ULTIMATE LIQUID NITROGEN FERTILIZER: This liquid lawn food supplement has an ultra-high nitrogen formula to promote green grass and quick growth. Easily turn yellow & nitrogen deficient grass into a lush thick green! - 28-0-0 QUICK & SLOW RELEASE TECHNOLOGY: This 2-in-1 liquid lawn fertilizer formula provides 70% quick-release nitrogen for rapid green and growth and 30% slow-release nitrogen for ongoing growth between applications.Get the best of both worlds in 1 easy application. - WORKS WITH ALL GRASS TYPES: Whether you have warm- or cold-season grass, this is the perfect liquid grass food for quick green-up. It's super-effective in making your lawn green and to achieve consistent growth. Ideal for both new and old lawns. - Apply Nitrogen to Your Lawn Quickly: PetraTools created our NPK lawn booster to be simple and easy to use. Mix 5oz of liquid nitrogen per gallon of water for maintenance or 10 oz per gallon to correct nitrogen levels. Treats up to 12,800 Sq. Ft. for maintenance or 6,400 Sq. Ft. of nitrogen deficient grass. For best results, use a PetraTools sprayer to evenly spray mixture across lawn. - American Family-Owned Company & USA Support: PetraTools is a USA-based company located in Carlisle, Pennsylvania. All PetraTools products have a 100% satisfaction guarantee and excellent USA customer service members waiting by the phones to answer any questions you may have. PetraTools continues to work hard to deliver top-quality sprayers & solutions to keep your home, lawn, and places of business clean, green, and safe. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B095BTZPYD | | Best Sellers Rank | #32,295 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #866 in Garden Fertilizers | | Brand Name | Petra | | Coverage | Full | | Customer Reviews | 4.5 4.5 out of 5 stars (926) 4.5 out of 5 stars | | Included Components | Fertilizer | | Item Form | Liquid | | Item Weight | 32 Ounces | | Liquid Volume | 32 Fluid Ounces | | Manufacturer | Petra | | Mixing Ratio | 1:20 or 1:10 | | Model Number | CRG/EY-7481FWS | | Number Of Items | 1 | | Part Number | 0-01 | | Specific Uses For Product | Lawn,Lawns | | Target Species | grass types | | Unit Count | 128.0 Fluid Ounces | | Upc | 850029123415 | ## Product Details - **Brand:** Petra - **Item Weight:** 32 Ounces - **Item Form:** Liquid - **Liquid Volume:** 32 Fluid Ounces - **Specific Uses For Product:** Lawn,Lawns ## Images ![Petramax Liquid Nitrogen Fertilizer 28-0-0 NPK - 32 Oz Spring & Summer Liquid Grass Fertilizer for Lawn, Spray on Easy to Apply for Deep Green Lawn Care - Slow Release High Nitrogen Turf Builder - Image 1](https://m.media-amazon.com/images/I/81r6Hwbd69L.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Greenest grass in the neighborhood! *by on Reviewed in the United States June 3, 2026* This stuff works great and my lawn has never been so green. I am proud of the way my lawn looks compared to my neighbors. Thank you Christina for your help in suggesting I try this product. I am now a repeat customer!! ### ⭐⭐⭐⭐⭐ Great stuff *by on Reviewed in the United States May 25, 2026* Product does work. I have bought this multiple times and it does make the lawn greener. I use a Petramax battery operated sprayer https://a.co/d/052UAaCL to spray the fertilizer on the lawn. ### ⭐⭐⭐⭐⭐ Skeptic turned believer *by on Reviewed in the United States September 17, 2024* I have read the reviews and noticed a lot of the reviews worked at the manufacturer of this product, but I was willing to give it a shot. Yes, $50 isn’t cheap but it was cheaper than refilling this specific area with mulch after every rain. I put about 2/3 of the gallon into an area that was a triangle, approximate dimensions are 20x12x13. The mulch was about 4-6” deep throughout this area. The problem with this area is when we get heavy rains, our gutters overflow into this area and washes the mulch out. We just had a tropic storm yesterday here in North Carolina and got about 7” of rain. No mulch washed out from this area. The huge issue with this area besides the overflow from the gutter is that the grade goes down about 1 1/2 feet in from the highest point to the lowest. After the rain from yesterday, there was some packing of the mulch just under the gutter but none of the mulch shifted or washed out. I will purchase a second gallon to reinforce what is there because of the amount of rain probably weakened it a little. Very happy with the product. Just an FYI, the mulch used was that cheap mulch you get from the gas station, 10/$10 with inconsistent sized pieces. --- ## 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.jp/products/325417931-petramax-liquid-nitrogen-fertilizer-28-0-0-npk-32-oz](https://www.desertcart.jp/products/325417931-petramax-liquid-nitrogen-fertilizer-28-0-0-npk-32-oz) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-06-18*